0624-L5 IMC BACnet Module
Product Information
The product is a Lennox BACnet module, designed for use in a
building automation system. It allows for communication and control
of various devices within the system.
Electrical
- Power Supply: 24VAC 50/60Hz (18-30VAC)
- Power Consumption: 7 watts
- Connector: Two position terminal block (Polarity Sensitive)
(Hot, Com)
Environment
- Operating Temperature Range: -40°F to 155°F
- Storage Temperature Range: -40°F to 185°F
- Relative Humidity: 10-95% RH non-condensing
Field Connections
- BACNET MSTP Transceiver Connector
- Baud Rate: 38.4K
- Cable Type: Twisted pair w/shield, 22AWG min. Belden type 88761
or 8761. Lennox 27M19, 94L63 or 68M25. - Max. Cable Length: 4000 ft
- Bus Termination: 120 ohms on last module in chain.
- LENNOX SysBus Connector
- Baud Rate: 9600
- Cable Type: Twisted pair w/shield, 22AWG min. Belden type 88761
or 8761. Lennox 27M19, 94L63 or 68M25. - Max. Cable Length: 4000 ft
- Bus Termination: None
Physical
- Dimensions: 3.1 x 3.5 x 1.25 in. (WxDxH)
- Weight: 0.1 lbs (0.04Kg)
- PCB Material: FR4
- Mounting: Four brass 5 in. standoffs for #6 screws.
Network Limitations
- The Lennox BACnet module does not support the COV (change of
value) service. - Lennox supports up to 31 unique MAC addresses utilizing the IMC
address DIP switches. Specific performance with the controls being
used is the responsibility of the controls integrator and/or the
controls manufacturer. - While there are 31 unique MAC addresses allowed, they must be
in the range of 1-31. - All modules have the same device name “Lennox”. The device name
cannot be made unique.
Network Cable
The network cable should be routed using best practices to avoid
induced noise. Do not route alongside power lines, or in proximity
to high voltage or high frequency devices, such as ignition
controls and variable frequency drives. The BACnet MSTP maximum
total bus length (without repeater) of 4000ft. (1219m) applies to
this device. Daisy-chain each module to the network and connect the
network cable shield to the earth ground at the control panel, and
at the G terminal of each BACnet module in the chain.
Network Bus Termination
A 120 ohm 1/4 watt resistor (provided in field kit) must be
added between the + and – terminals on the BACnet connection on the
last module in the daisy chain. Install the resistor on the LAST
module only. Do not add a resistor to each module.
IMPORTANT: A qualified systems integrator with adequate training
and experience is required to integrate and commission the IMC
BACnet Module into a third-party BACnet building automation system.
A BACnet configuration software tool is required to commission the
BACnet network.
Product Usage Instructions
To configure the IMC Unit Controller, you can use either the IMC
pushbutton and DIP switches or a PC with Unit Controller software
and a PC converter. Consult the IMC manual for detailed
instructions on adjusting control parameters.
Service Literature
Corp. 0624-L5 02/2008 (Supersedes 08/06)
IMC BACnet® Module
General
The IMC BACnet® module allows communication between the Lennox IMC (M1-7, v5.02+) controller and a BACnet MSTP network. The module translates input and output variables between the Lennox SysBus protocol and the BACnet protocol.
The BACnet® module has been developed to communicate with building automation systems that support the BACnet Application Specific Controller (B-ASC) device profile.
A Lennox zone sensor, a BACnet® network zone sensor, or a BACnet thermostat may be used to send the zone temperature or thermostat demands to the IMC.
Table of Contents
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Hardware Specifications . . . . . . . . . . . . . . . . . . . . . . . . 1 Network Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Network Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Network Bus Termination . . . . . . . . . . . . . . . . . . . . . . 2 Configuring IMC Unit Controller . . . . . . . . . . . . . . . . 3 Data Update Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Start Up Unit Operation . . . . . . . . . . . . . . . . . . . . . . . 4 Normal Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . 4 Communication Check Out . . . . . . . . . . . . . . . . . . . . 5 Connection Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 BACnet Datapoints . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Zone Sensor Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . 8 IMC Alarm Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Interpretation of Datapoints . . . . . . . . . . . . . . . . . . . . . 9 BACnet PIC Statement . . . . . . . . . . . . . . . . . . . . . . . . . 23
Electrical
Power Supply Power Consumption Connector
Environment
Operating Temperature Range Storage temperature Range RH
Field Connections
BACNET MSTP Transceiver Connector Baud Rate Cable Type Max. Cable Length Bus Termination LENNOX SysBus Connector Baud Rate Cable Type Max. Cable Length Bus Termination
Physical
Dimensions Weight PCB Material Mounting
Table 1. IMC BACnet® Hardware Specifications
24VAC 50/60Hz (18-30VAC) t=7 watts Two position terminal block (Polarity Sensitive) (Hot, Com)
-40F to 155F -40F to 185F 10-95% RH non-condensing
RS-485 Three position terminal block (+ _ G) 38.4K Twisted pair w/shield, 22AWG min. Belden type 88761 or 8761. Lennox 27M19, 94L63 or 68M25 4000 ft Repeater is required for longer lengths. 120 ohms on last module in chain. RS485 Two position terminal block 9600 Twisted pair w/shield, 22AWG min. Belden type 88761 or 8761. Lennox 27M19, 94L63 or 68M25. 4000 ft. Repeater is required for longer lengths None
3.1 x 3.5 x 1.25 in. (WxDxH) 0.1 lbs (0.04Kg) FR4 Conformal coated Four brass 5 in. standoffs for #6 screws.
Page 1
© 2007 Lennox Industries Inc.
Network Limitations
The Lennox BACnet module does not support the COV (change of value) service.
Lennox supports up to 31 unique MAC addresses utilizing the IMC address DIP switches. Specific performance with the controls being used is the responsibility of the controls integrator and/or the controls manufacturer.
While there are 31 unique MAC addresses allowed, they must be in the range of 1-31.
All modules have the same device name Lennox”. The device name cannot be made unique.
Network Cable
The IMC BACnet® Module is compatible with MSTP EIA-485 daisy-chain networks communicating at 38.4 kbps. Connect the BACnet MSTP network cable to the IMC BACnet module. The module operates at a 38.4K baud rate. It is compatible with twisted pair, shielded 22AWG minimum cable such as Belden 8761, 88761 and Lennox catalog numbers 27M19, 94L63 or 68M25. A maximum of 31 IMC BACnet modules can be included per network.
The network cable should be routed using best practices to avoid induced noise. Do not route alongside power lines, or in proximity to high voltage or high frequency devices,
such as ignition controls and variable frequency drives. The BACnet MSTP maximum total bus length (without repeater) of 4000ft. (1219m) applies to this device. Daisy- chain each module to the network and connect the network cable shield to the earth ground at the control panel, and at the G terminal of each BACnet module in the chain.
Network Bus Termination
A 120 ohm 1/4 watt resistor (provided in field kit) must be added between the + and – terminals on the BACnet connection on the last module in the daisy chain.
IMPORTANT
Install the resistor on the LAST module only. Do not add a resistor to each module.
IMPORTANT
A qualified systems integrator with adequate training and experience is required to integrate and commission the IMC BACnet Module into a third party BACnet building automation system. A BACnet configuration software tool is required to commission the BACnet network.
HEARTBEAT LED (RED)
JUMPERS HAVE NO FUNCTION
BACnet
BACnet TRANS-
RECEIVE LED MIT LED
TB63
_G
+
SHIELD
BACnet RS-485 MSTP NETWORK CONNECTION
HEARTBEAT LED (RED)
SYSTEM READY LED
POWER INDICATION LED
SY+SBU-S
24VAC HOT COM
BACnet NETWORK (38.4K baud rate)
SHIELD WIRE NOT CONNECTED
COMMUNICATION CABLE (TWISTED PAIR)
TB1-7 TB1-6
IMC M1-7
Figure 1. IMC BACnet® Module (A146) Page 2
Configuring the IMC Unit Controller
ECTO Settings Use the IMC pushbutton and DIP switches to manually adjust the following control parameters (see IMC manual). A PC can also be used with Unit Controller software and a PC converter.
Lennox Zone Sensor Installed:
1. Set ECTO 6.01 to option 3 (zone sensor system mode with return air sensor back-up).
2. Set ECTO 6.17 to option 1 (continuous blower during occupied).
3. Set ECTO 6.02-6.05 as specified (back-up occupied and unoccupied heating and cooling setpoints).
BACnet® Zone Sensor Installed:
1. Set ECTO 6.01 to option 3 (zone sensor system mode with return air temperature back-up).
2. Set ECTO 6.17 to option 1 (continuous blower during occupied).
3. Set ECTO 5.27 to option 2 (network zone sensor option).
BACnet Thermostat Installed:
Set ECTO 6.01 to option 6 (remote demand system mode with return air sensor back-up).
IMC Settings 1. Be sure the occupied 24 VAC input is energized by
adding a jumper wire between TB1-8 and 9. In the event that communication is lost between the IMC BACnet module and the IMC, the IMC will operate in the occupied mode and use the occupied backup setpoints.
2. Set the BACnet device I.D. (and MAC address) with the unit address DIP switch on the IMC main board (M1-7). See figure 2. Each IMC on the BACnet network must have a different address between 1 and 31. Do not use 0 for addressing.
NETWORK LED
UNIT ADDRESS DIP SWITCH
IMC M1-7
BUS XMIT
ADDRESS 1 2 4 8 16
TRANSMIT LED
Figure 2. IMC LEDS
The value of the five switches on the address DIP switch are labeled on the printed circuit board (1, 2, 4, 8, or 16). Add the values of the five switches set to the ON position. See figure 3.
1
+1
2
0
EXAMPLE OF
4
0 ADDRESS 1
8
0
16
0
=1
Address is the sum of values printed on circuit board.
1
+1
2
0
EXAMPLE OF
4
+4 ADDRESS 13
8
+8
16
0
=13
Figure 3. Address DIP Switch
IMC Version This module requires a rooftop unit IMC M1-7 version 5.02 or higher. An IMC upgrade kit is available for older M1-7 versions. M1-6 and earlier IMCs cannot be used with the BACnet module; contact Lennox Technical Support at 800-453-6669. Check IMC version as follows:
1. Locate IMC board in compressor area. Refer to IMC manual provided with rooftop unit.
2. Set the MODE DIP UNIT TEST” and RECALL” switches to ON”. See figure 4.
3. The IMC LEDs will display the current IMC version.
4. Be certain to return the UNIT TEST” and RECALL” switches to OFF” after viewing the version number. Communication to the IMC is interrupted while these MODE DIP switches are ON”.
Set the MODE DIP UNIT TEST” and RECALL” switches to ON”.
MODE
ON
UNIT TEST RECALL ECTO TEMP OPT2 SHIFT
LED will display current software version.
Figure 4. Check Software Version and Address
Data Update Rate
If the following BACnet® variables are not updated for a period of 5 minutes, the IMC will go into the back up modes described in the BACnet Connection Failure Section. Application Mode Control AO:101 (when ECTO 6.01=4-7) Space Temperature Input AO:113 (when ECTO 5.27=2)
Whenever either of these ECTO selections are made, it is highly recommended the IMC get updated in less than 2 minutes.
Page 3
Start Up Unit Operation – Before BACnet Network is Commissioned
Lennox Zone Sensor Installed: Prior to commissioning, no BACnet setpoint is available. The unit will be off.
Two minutes after power-up (ECTO 5.25), the IMC will operate the unit based on the IMC ECTO unoccupied backup setpoints (heating = 60°F, cooling = 85°F) and current zone temperature read by the Lennox zone sensor.
BACnet Zone Sensor Installed: Prior to commissioning, neither BACnet setpoint nor sensor data are available. The unit will be off.
Five minutes after power-up, the IMC will operate the unit based on the IMC ECTO unoccupied backup setpoints (heating = 60°F, cooling = 85°F) and the current zone temperature read by an additional Lennox zone sensor if installed. If the Lennox zone sensor is not installed, the IMC return air temperature sensor is used as backup (ECTO 6.01).
BACnet Thermostat Installed: Prior to commissioning, no BACnet thermostat command is available. The unit will be off.
Five minutes after power-up, if no application mode command has been received, the IMC will operate the unit based on the IMC ECTO unoccupied backup setpoints (heating = 60°F, cooling = 85°F) and the current zone temperature read by the Lennox zone sensor or the IMC return air temperature sensor depending on the choice of backup (ECTO 6.01).
Normal Unit Operation – After BACnet Network Is Commissioned
The occupancy of the space can be determined using any combination of the following control points:
S BACnet Network scheduling S Manual override S Space occupancy sensor
Lennox Zone Sensor Installed:
The unit is off for up to two minutes after power-up (ECTO 5.25) unless the BACnet Network sends a setpoint. The unit will operate based on this setpoint and the temperature from the Lennox zone sensor.
In addition to control points, space occupancy can be manually overridden using a Lennox zone sensor equipped with an optional after hours switch.
BACnet Zone Sensor Installed:
The unit is off for up to five minutes after power-up unless the BACnet Network sends a setpoint and BACnet zone sensor data. The unit will operate based on this setpoint and temperature data.
BACnet Thermostat Installed:
The unit remains off for up to five minutes after power-up unless the BACnet Network sends a thermostat command. The unit will operate based on the most recently received thermostat command.
Page 4
Communication Check
Use the following table as a guide once the IMC and BACnet Module are connected and powered. See figure 3. Table 2. IMC to BACnet® Module Communication
LED IMC BUS and XMIT LEDs flash.
IMC BUS and XMIT LEDs are off.
IMC BUS LED flashes but XMIT LED is off.
Action
None. Indicates normal communication.
1- Check cable connection between the IMC module. 2- Reverse polarity of the cable between the IMC and BACnet Module. 3- Check 24VAC power to BACnet module.
1- Make sure unit addresses are between 1 and 31. 2- Make sure MODE DIP RECALL switch is OFF. 3- Make sure MODE DIP ECTO switch is OFF. 4- Make sure MODE DIP UNIT TEST switch is OFF.
Table 3. BACnet Network Communication Use the following table as a guide once the BACnet network is set up and operating.
LED BACnet communication transmit and receive LEDs flash.
BACnet communication LEDs are off.
Action
None. Indicates normal communication.
1- Check BACnet network connections. 2- Make sure BACnet network is commissioned. 3- Make sure 24 volts is connected to the BACnet module. 4- Make sure unit address is between 1 and 31.
Connection Failure
Table 4. Connection Failure Control following a connection failure depends on where the failure occurs, and which input device has been used.
Lennox Zone Sensor
Between IMC and BACnet Module
BACnet Network
1- During the 5 minutes following a failure, the IMC cycles on last set- 1-
point.
2-
2- IMC resets. No heating or cooling during 2 minutes (ECTO 5.25)
following reset.
3 – IMC cycles based on ECTO backup setpoints.
4- Occupancy is determined by hardware input at TB1.
IMC cycles on last setpoint. Last occupancy input is used.
BACnet Zone Sensor
1- During 5 minutes following failure, IMC continues current opera- 1- During 5 minutes following failure, IMC con-
tion: heat, cool, or off.
tinues current operation: heat, cool, or off.
2- IMC resets. No heating or cooling during 5 minutes following reset. 2- IMC uses ECTO backup setpoints.
3- IMC uses ECTO backup setpoints.
3- IMC attempts to use Lennox zone sensor as
4- IMC attempts to use Lennox zone sensor as backup. If this fails, IMC uses return air sensor backup.
backup. If this fails, IMC uses return-air-sensor backup.
5- Occupancy is determined by hardware input at TB1.
4- Last occupancy input is used.
1- During 5 minutes following failure, IMC continues current opera- 1- During 5 minutes following failure, IMC con-
tion: heat, cool, or off.
tinues current operation: heat, cool, or off.
BACnet 2- IMC resets. No heating or cooling during 5 minutes following reset. 2- IMC uses ECTO backup setpoints.
Thermos tat
3-
IMC uses ECTO backup setpoints.
3- IMC uses return-air-sensor backup.
4- IMC uses return-air-sensor backup.
4- Last occupancy input is used.
5- Occupancy is determined by hardware input at TB1.
Page 5
BACnet® Data Points
By convention input and output are described from the point of view of a client device communicating with the interface module. Outputs are values written to the interface
module, and inputs are values read from the interface module (see tables 5 and 6).
BACnet Object Name
Application Mode Control 0 -Auto 1 -Heat 3 -Cool 6 -Off 9 -Fan only
208 -Fan auto 209 -Fan on 216 -Exhaust auto 217 -Exhaust on 218 -Exhaust off 224 -Idle 225 -Heat1 226 -Heat2 (heat pump only) 227 -Heat3 228 -Cool1 229 -Reheat lo 230 -Reheat high 232 -Cool2 236 -Cool3 254 -Reset 255 -Null Outdoor Air Min Pos Control Occupancy Override Control
Occupancy Scheduler Control
Occupancy Sensor Input
Space Dehumidification Setpt Temperature Setpoint (abs) Temperature Setpoint Offset Space Temperature Input Emergency Override Control Compressor Enable Control Primary Heat Enable Control Auxiliary Heat Enable Control Duct Static Setpoint Building Static Setpoint Discharge Air Cooling Setpoint Discharge Air Heating Setpoint Supply Fan Capacity Input Exhaust Fan Capacity Input
Table 5. Inputs To IMC
Object Type: ID: Units
Description
AO: 101:95 (No_ Units)
Unit application Heating or cooling. Default after reset.
Heating only.
Cooling only.
Unit off.
No heating or cooling allowed.
Main fan (blower) auto. Default after reset.
Main fan (blower) on.
Power exhaust fan auto. Default after reset.
Power exhaust fan on.
Power exhaust fan off.
Heat / cool off. Default after reset.
Heat 1
Heat 2. Heat pump emergency heat.
Heat 3. Full heating.
Cool 1
Supermarket reheat (lo)
Supermarket reheat (hi)
Cool 2
Cool 3. Full cooling.
Force controller reset
Same as auto.
AO: 102 : 98 (Percent)
Min economizer damper position
AO: 103: 95 (No_Units)
Zone occupied status
AO: 104: 95 (No_Units)
Occupancy scheduler input used to put controller unit into different occupancy modes.
AO: 107: 95 (No_Units)
Occupancy sensor input. Used to indicate the presence of occupants
AO: 108: 98 (Percent)
Zone relative humidity set point
AO: 109: 64 (Deg. F)
Zone temperature setpoint
AO: 110: 64 (Deg. F)
Zone temp setpoint offset
AO: 113: 64 (Deg. F)
Remote zone temp.
AO: 114: 95 (No_Units)
Emergency smoke override
AO: 115: 98 (Percent)
Compressor enable
AO: 117: 98 (Percent)
Primary heat enable
AO: 119: 98 (Percent)
Auxiliary heat enable
AO: 123: 58 (Inches-of-water) Duct static pressure setpoint
AO: 124: 58 (Inches-of-water) Building static pressure setpoint
AO: 125: 64 (Deg. F)
Discharge air cooling setpoint
AO: 126: 64 (Deg. F)
Discharge air heating setpoint
AO: 127: 98 (Percent)
Supply fan capacity setting
AO: 128: 98 (Percent)
Exhaust fan capacity setting
Page 6
BACnet Object Name
Table 6. Outputs from IMC
Object Type: ID: Units
Description
IMC Version [00]…..[07]
AI: 200-207 : 95 (No_Units) IMC firmware version. (null terminated ASCII)
Unit ID
AI: 231 : 95 (No_Units)
Unit ID $3x-Gas/Elect. $4x-Elect/Elect. $5x-Heat Pump
Unit Status
AI :232 : 95 (No_Units)
1 – HVAC heat
2 – HVAC morning warm-up
3 – HVAC cool
5 – HVAC pre-cool
6 – HVAC off
7 – HVAC test
8 – HVAC emergency heat 9 – HVAC fan only
Unit operation mode (i.e. cool, heat, etc.)
12 – HVAC max heat
14 – HVAC dehumidification
129 – HVAC fresh air heating
131 – HVAC fresh air cooling
145 – HVAC defrost 1
161 – HVAC defrost 2
177 – HVAC defrost 1, 2
Space Temperature
AI: 239 : 64 (Deg. F)
Discharge Air Temperature
AI: 240 : 64 (Deg. F)
Supply air temperature
Effective Occupancy
AI: 241 : 95 (No_ Unit)
Zone occupied status
Local Outside Air Temperature AI: 242 : 64 (Deg. F)
Outdoor air temperature
Local Space Temperature
AI: 243 : 64 (Deg. F)
Zone Temperature, local
Outside Air Damper
AI: 244 : 98 (Percent)
Economizer damper position
Heat Primary
AI: 245 : 98 (Percent)
Primary heating status
Heat Secondary
AI: 246 : 98 (Percent)
Heat pump electric strip heating status
Cool Primary
AI: 247 : 98 (Percent)
Cooling compressor 1-4 status (on/off)
Economizer Enabled
AI: 248 : 95 (Percent)
Economizer outdoor air suitable
Supply Fan Status
AI: 250 : 98 (Percent)
Supply fan status
Space Temperature Set Point AI: 252 : 64 (Deg. F) (Eff)
Zone temperature set points
Current Error
AI: 253 : 95 (No_Units)
Currently displayed error code
Error Pointer
AI: 254 : 95 (No_Units)
Error pointer. This value points to the next available alarm code location. It runs from 0 to 83 and then rolls-over to 0. Tracking this value and using the ten most recent error codes (below) allows an application to determine when new errors are logged by the IMC, what those errors are, and if any errors have been missed due to network delays or for any other reason.
Most recent Error 1..10
AI: 255-264 : 95 (No _Units) IMC alarm codes as listed in the IMC manual.
Space CO2 Sensor (Local) Space Humidity (Local)
AI : 274 :96 (Parts per million) Zone CO2 level (PPM), local
AI: 276 : 98 (Percent)
Zone relative humidity, local
Dehumidification Set Point (Eff)
AI: 278 : 98 (Percent)
Zone relative humidity set point
Dehumidification Status
AI: 279 : 95 (No_Units)
Dehumidification status
Return Air Temperature
AI: 281 :64 (Deg. F)
Return air temperature
Building Static Pressure
AI: 282 : 64 (Inches of water) Analog Input 2 (GP1 – VAV Bldg Static)
table continued on next page
Page 7
BACnet Object Name Duct Static Pressure Exhaust Fan Status Controller Online
Table 6. Outputs from IMC
Object Type: ID: Units
Description
AI: 283 : 64 (Inches of water) Analog Input 1 (GP1 – VAV Supply Static)
AI: 285 :98 (Percent)
Exhaust fan status
B1:100 :95 (No_Units)
IMC Communicating
Zone Sensor Setpoints
The IMC typically uses four setpoints and the zone temperature to operate the unit when a zone sensor is installed. Because the BACnet network provides a single setpoint input, the IMC will use the zone temperature setpoint and
95°F IMC Cooling Maximum Setpoint
ECTO 6.15 to determine the heat / cool setpoint in the occupied mode. During the unoccupied mode, the IMC will use the zone temperature setpoint and the difference between ECTO 6.05 and 6.03.
See figure 5 for an example of setpoints when the IMC is operating using ECTO default values.
Unocc. Clg. Setpoint 82.5°F
Occ. Clg. Setpoint 71.5°F
BACnet Network
Input (setpoint + offset)
70°F
68.5°F Occ. Htg. Setpoint
3°F (ECTO 6.15) Autochangeover deadband
25°F (ECTO 6.05-6.03) Difference between unoccupied heating and cooling backup setpoints.
40°F IMC Heating Minimum Setpoint
57.5°F Unocc. Htg. Setpoint
Figure 5. IMC Default Setpoint Example (Zone Sensor Installed)
IMC Alarm Codes See the IMC user guide for a list of alarm codes.
Page 8
Interpretation Of Datapoints
IMC BACnet® Properties Value_Decoding
Object Name:
Controller Online
Object Type:
BI (read)
Object ID:
100
Object Units:
( 95) No_Units
Value = 0 – 1
0: Lennox IMC is not communicating. 1: Lennox IMC is communicating.
Object Name: Object Type: Object ID: Object Units:
Value = 0 – 255
Application Mode Control AO (write- datatype unsigned) 101 ( 95) No_Units
Set the application mode input to Value.
The IMC controller can be set locally during commissioning to operate in either of two modes: remote zone sensor control mode (with local or remote zone sensor), or remote thermostat control mode. Several application mode command values are recognized by either IMC mode, while some can only be used when the IMC is in the remote thermostat control mode.
Common Application Mode Values
Value 0 $00 1 $01 3 $03 6 $06 9 $09 255 $FF 208 $D0 209 $D1 216 $D8 217 $D9 218 $DA 254 $FE
Mode
Description
AUTO
Heating or cooling. Default after reset.
HEAT
Heating only.
COOL
Cooling only.
OFF
Unit off.
FAN ONLY
No heating or cooling allowed.
NUL
Same as AUTO.
FAN AUTO
Main fan (blower) auto. Default after reset.
FAN ON
Main fan (blower) on.
EXHAUST AUTOPower exhaust fan auto. Default after reset.
EXHAUST ON Power exhaust fan on.
EXHAUST OFF Power exhaust fan off.
RESET
Force controller reset.
The four command groups (0-9, 255), (208-209), (216-218), and (224-236, see below) are independent of each other. Selecting a command from one group does not affect any previously sent command from another group. Except for OFF and RESET, which also set FAN AUTO, EXHAUST AUTO, and heat/cool demand IDLE.
AUTO is the default application mode input. When in a remote zone sensor mode, AUTO allows the IMC control to generate heating and cooling demands based on zone temperature and zone temperature setpoint. Auxiliary functions such as dehumidification or emergency override (i.e. smoke mode) will still operate as needed. Also the blower and exhaust fan fuctions operate.
HEAT and COOL allow the servicing of only heating or cooling demands. These set a mode only, and do not generate a demand.
Application mode OFF is a unit-disable state, causing the controller to become idle, and clearing all outputs and timers. All outputs are kept off while application mode is OFF.
Application mode FAN ONLY disables heating and cooling operation. No effect on fan operation. Return to normal operation with AUTO, HEAT, or COOL.
Application modes FAN ON and FAN AUTO are used to turn on the main unit fan (blower), or return it to automatic operation.
Application modes EXHAUST ON, EXHAUST OFF, and EXHAUST AUTO are used to turn on/off a power exhaust fan, or to return it to automatic operation. The IMC may delay up to 30 seconds before responding to an exhaust command.
Page 9
Application mode RESET causes the system to reset itself and go through the controller’s startup and initialization routines. This takes about 8 seconds in an IMC controller, during which time the analog and digital inputs are settling to correct values. The controller will return to AUTO operation.
AUTO, FAN AUTO and EXHAUST AUTO are the defaults after reset.
Application Modes Specific To Remote Thermostat Operation
These values are only recognized if the IMC control is placed in a remote thermostat mode of operation (set locally during commissioning).
Value 224 $E0 228 $E4 232 $E8 236 $EC 225 $E1 226 $E2 227 $E3 229 $E5 230 $E6
Mode IDLE COOL1 COOL2 COOL3 HEAT1 HEAT2 HEAT3 REHEAT LO REHEAT HI
Y2 Y1 W2 W1 0000 0100 1000 1100 0001 0010 0011 0101 0111
Description Heat / Cool off. Default after reset. Cool 1. Cool 2. Cool 3. Full cooling. Heat 1. Heat 2. Heat 3. Full heating. Supermarket reheat (lo) Supermarket reheat (hi)
For all $Ex values the fan runs if it is already on, otherwise the fan turns on after a fan on-delay. For $E0 the fan turns off after a fan off-delay.
COOL2 and COOL3 are equivalent unless 3-stage cooling has been selected locally at the controller during commissioning.
HEAT2 and HEAT3 are equivalent except in heat pump equipment types, when HEAT2 acts as emergency heat”, running auxiliary strip heat and turning off the compressor(s). So in a heat pump, normal heating is commanded using HEAT1 or HEAT3.
If a mode not defined in the above list is sent, then the application mode is not changed.
When an IMC is commissioned for BACnet® gateway remote thermostat operation, it will wait for 5 minutes following startup to receive application mode data. The IMC will remain in AUTO mode until data is received, or until the 5 minute period has expired.
If 5 minutes passes without data being received, then the IMC will enter the backup mode of operation (set locally during commissioning).
It is recommended that the application mode data be updated at intervals of no more than 2 minutes to be sure that a single missed-data event will not constitute an application mode data failure. Any application mode data will serve as a valid update; either common or remote thermostat values.
If application mode data appears while the IMC is in a backup mode, then the IMC will reset and normal operation will resume.
Object Name: Object Type: Object ID: Object Units:
Outdoor Air Min Pos Control AO (write- datatype unsigned) 102 ( 98) Percent
Value = 0 – 255
0 -100: 101 – 255:
Set the minimum position of the outdoor air economizer damper; % open. Relinquish to local control. Min damper position depends on the setting in IMC ECTO 5.24: ECTO 5.24 =101: Min damper position set by potentiometer on economizer control. <101: Min damper position set by ECTO 5.24.
The minimum damper position is only effective when the system is occupied and the main blower is running. Otherwise the damper remains closed.
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Object Name: Object Type: Object ID: Object Units:
Occupancy Override Control AO (write- datatype unsigned) 103 ( 95) No_Units
Value = 0-255
0: 1: 2: 3-255:
space occupied space unoccupied (IMC does not support; gives auto operation) refresh space occupied timer defined at local controller auto; clear timer and return to occupancy scheduler state
Object Name: Object Type: Object ID: Object Units:
Occupancy Scheduler Control AO (write- datatype unsigned) 104 ( 95) No_Units
Value = 0 – 255
0: space occupied
1-255:
space unoccupied
Object Name: Object Type: Object ID: Object Units:
Occupancy Sensor Input AO (write- datatype unsigned) 107 ( 95) No_Units
Value = 0 – 255
0: 1: 2-255:
occupancy sensor indicates space occupied occupancy sensor indicates space unoccupied (IMC does not support; gives auto operation) auto; return to occupancy scheduler state
The occupancy inputs are logically OR”; if any one is OCCUPIED” then the space is occupied, otherwise the space is UNOCCUPIED”. No single input can force the space UNOCCUPIED”.
Object Name: Object Type: Object ID: Object Units:
Value = 0 – 100
Space Dehumidification Setpt AO (write- datatype unsigned) 108 ( 98) Percent
0-100:
% relative humidity setpoint
Dehumidification begins when the effective space relative humidity rises to this setpoint value.
Dehumidification ends when the effective space relative humidity reaches falls below this setpoint value minus a dehumidification deadband that is typically 3%. The deadband value is set locally during commissioning.
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Object Name: Object Type: Object ID: Object Units:
Temperature Setpoint (abs) AO (write- datatype real) 109 ( 64) Degrees-Fahrenheit
Value = 36.25 100.00 degF, in 0.25 degF increments
The single-point Temperature Setpoint (abs)” (including offset; see below) is converted locally to occupied and unoccupied heating and cooling setpoints. The occupied and unoccupied heating and cooling setpoints are computed to be centered (if possible) on the effective single-point setpoint. This is done while preserving the occupied and unoccupied deadbands, as well as any local restrictions on minimum or maximum values.
The occupied heat/cool auto-changeover deadband value is set locally during commissioning.
The unoccupied heat/cool auto-changeover deadband value is set locally during commissioning by adjusting the backup unoccupied heating and cooling setpoints. The difference between these setpoints will be used as the unoccupied heat/cool auto-changeover deadband value.
Object Name: Object Type: Object ID: Object Units:
Temperature Setpoint Offset AO (write- datatype real) 110 ( 64) Degrees-Fahrenheit
Value = -32.00 31.75 degF, in 0.25 degF increments
A signed value added to the Temperature Setpoint (abs) value to provide an effective temperature setpoint. See above regarding deadbands and limits.
Object Name: Object Type: Object ID: Object Units:
Space Temperature Input AO (write- datatype real) 113 ( 64) Degrees-Fahrenheit
Value = 36.25 100.00 degF, in 0.25 degF increments
A network value for the space temperature. Heating and cooling demands are generated based on the Space Temperature Input”, and the Temperature Setpoint (abs)” and Temperature Setpoint Offset” values. See above.
When an IMC is commissioned for BACnet® gateway remote room sensor operation, it will wait for 5 minutes following startup to receive space temperature data. The IMC will remain in a no-run mode until data is received, or until the 5 minute period has expired.
If 5 minutes passes without data being received, then the IMC begins to use local data for the space temperature. If a local sensor is connected then it will be used. If not, then a failed-sensor error is recorded and the IMC will enter the backup mode of operation (set locally during commissioning).
It is recommended that network data be updated at intervals of no more than 2 minutes to be sure that a single missed- data event will not constitute a data update failure.
If data appears after a sensor failure is processed, it will be treated as an intermittent sensor. Normal operation will resume. If the IMC is in a backup mode, then it will reset before resuming.
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Object Name: Object Type: Object ID: Object Units:
Value = 0 – 255
Emergency Override Control AO (write- datatype unsigned) 114 ( 95) No_Units
Set the emergency mode defined by Value, decoded as:
Supply
Exhaust
Value Mode
Fan
Fan
0 NORMAL
auto
auto
1 PRESSURIZE
on
off
2 DEPRESSURIZE
off
on (speed)
3 PURGE
on
on (speed)
4 SHUTDOWN
off
off
5 FIRE
6 DEPRESSURIZE
off
on (pressure)
7 PURGE
on
on (pressure)
>7 NUL (normal)
auto
auto
auto –
normal operation
(speed) –
exhaust fan runs at speed pre-selected at equipment
(pressure) – exhaust fan runs to maintain building press setpoint; local or remote
Mode 5, FIRE, is a locally defined operation (set at commissioning).
For units without VFD exhaust fans, modes 6-7 are the same as 2-3.
Emergency Override Control” input takes precedence over local smoke input.
Outdoor Damper auto open closed open closed
closed open auto
Object Name: Object Type: Object ID: Object Units:
Compressor Enable Control AO (write- datatype unsigned) 115 ( 98) Percent
Value = 0 – 255
0: 1-100: 101-255:
output disabled output limited to 1 100% of maximum maximum output permitted
The following table shows the Value where the indicated compressor stage is disabled, for equipment having the indicated maximum number of compressor stages:
Maximum Stages
Stage Disabled When Value < x
1
2
3
4
1
Value < 50
2
Value < 33 Value < 66
3
Value < 25 Value < 50 Value < 75
4
Value < 20 Value < 40 Value < 60 Value < 80
Free cooling using an economizer with outdoor air is not considered a stage. Only compressors are considered to be stages.
Disabled stages are re-enabled at the above values plus 3% hysteresis.
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Object Name: Object Type: Object ID: Object Units:
Value = 0 – 255
Primary Heat Enable Control AO (write- datatype unsigned) 117 ( 98) Percent
0: output disabled
1-100:
output limited to 1 100% of maximum
101-255:
maximum output permitted
The table shown above for Compressor Enable Control” can also be applied here to the Primary Heat Enable Control”. It shows the Value where the indicated primary heating stage is disabled, for equipment having the indicated maximum number of primary heating stages.
In heat pump systems during heating operation, the lower value of Compressor Enable Control” and Primary Heat Enable Control” is used to establish the compressors that can run.
Object Name: Object Type: Object ID: Object Units:
Value = 0 – 255
Auxiliary Heat Enable Control AO (write- datatype unsigned) 119 ( 98) Percent
0: output disabled
1-100:
output limited to 1 100% of maximum
101-255:
maximum output permitted
The table shown above for Compressor Enable Control” can also be applied here to the Auxiliary Heat Enable Control”. It shows the Value where the indicated auxiliary heating stage is disabled, for equipment having the indicated maximum number of auxiliary heating stages.
The Auxiliary Heat Enable Control” is only used in heat pump systems.
Object Name: Object Type: Object ID: Object Units:
Duct Static Setpoint AO (write- datatype real) 123 ( 58) Inches-of-water
Value = 0.0 – 5.0 inWC
The setpoint for control of duct static pressure, in inches of water column. The main blower speed or bypass damper setting is varied to maintain this value. The setpoint can be selected from the range of 0.0 to 5.0 inches of water column.
Object Name: Object Type: Object ID: Object Units:
Building Static Setpoint AO (write- datatype real) 124 ( 58) Inches-of-water
Value = -0.5 – 0.5 inWC
The setpoint for control of building static pressure, in inches of water column. The exhaust blower is cycled or, if a VFD is used, its speed is varied to maintain this value. The setpoint can be selected from the range of -0.5 to +0.5 inches of water column.
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Object Name: Object Type: Object ID: Object Units:
Discharge Air Cooling Setpoint AO (write- datatype real) 125 ( 64) Degrees-Fahrenheit
Value = 40 – 80 degF, and -9 degF
The setpoint for control of discharge (or supply) air temperature during cooling. When the controller is in the correct mode of operation, sending this setpoint will cause cooling components to cycle, or vary their output, in order to maintain this temperature in the leaving air stream. The setpoint can be selected from the range of 40 to 80 degrees Fahrenheit. Selecting a value of -9 degF causes the control to revert to the use of its locally programmed setpoint.
Object Name: Object Type: Object ID: Object Units:
Discharge Air Heating Setpoint AO (write- datatype real) 126 ( 64) Degrees-Fahrenheit
Value = 80 – 140 degF, and -9 degF
The setpoint for control of discharge (or supply) air temperature during heating. When the controller is in the correct mode of operation, sending this setpoint will cause heating components to cycle, or vary their output, in order to maintain this temperature in the leaving air stream. The setpoint can be selected from the range of 80 to 140 degrees Fahrenheit. Selecting a value of -9 degF causes the control to revert to the use of its locally programmed setpoint.
Object Name: Object Type: Object ID: Object Units:
Supply Fan Capacity Input AO (write- datatype unsigned) 127 ( 98) Percent
Value = 0 – 255
0 – 100: 101 – 255:
Set the supply fan capacity as a % of maximum speed. Relinquish to local control. Supply fan capacity depends on IMC ECTO values.
Supply fan capacity is only effective when the main blower is running.
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Object Name: Object Type: Object ID: Object Units:
Exhaust Fan Capacity Input AO (write- datatype unsigned) 128 ( 98) Percent
Value = 0 – 255
0 – 100: 101 – 255:
Set the exhaust fan capacity as a % of maximum speed. Relinquish to local control. Exhaust fan capacity depends on IMC ECTO values.
Exhaust fan capacity is only effective when the exhaust fan is running.
Object Name: Object Type: Object ID: Object Units:
IMC Version[00], IMC Version[01], 0, IMC Version[07] AI (read) 200, 201, …, 207 ( 95) No_Units
Value = 0, 46, 48 – 57
0:
end of string
46:
.”
48:
0″
…
57:
9″
Each value is the ASCII code of a character in the IMC version number. The version number is found in a nul-terminated string, most-significant-character first, beginning in IMC Version[00]. Maximum length is 8 chars, including nul.
Object Name:
Unit ID
Object Type:
AI (read)
Object ID:
231
Object Units:
( 95) No_Units
Value = 0 – 255
48-63:
gas heat, electric cool
64-79:
electric heat, electric cool
80-95:
electric heat pump, with or without electric resistive heat
These are the currently defined IMC unit types.
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Object Name: Object Type: Object ID: Object Units:
Unit Status AI (read) 232 ( 95) No_Units
Value = 0 – 255
1 2 3 5 6 7 8 9 12 14 129 131 145 161 177
HVAC heat. HVAC morning warmup. HVAC cool. HVAC pre-cool. HVAC off. HVAC test. HVAC emergency heat. HVAC fan only. HVAC max heat. HVAC dehumidification. HVAC fresh air heating. HVAC fresh air cooling. HVAC defrost compressor 1. HVAC defrost compressor 2. HVAC defrost compressor 1 & 2.
These are the currently defined IMC unit status.
Object Name: Object Type:
Space Temperature AI (read)
Object ID: Object Units:
239 ( 64) Degrees-Fahrenheit
Value = 63.75 100.00 degF, in 0.25 degF increments
Space temperature from local IMC sensor, or from Space Temperature Input”.
This is the actual value being used by the IMC. Its source is either a locally wired temperature sensor (see Local Space Temperature”) or the network input (see Space Temperature Input”).
Object Name: Object Type:
Discharge Air Temperature AI (read)
Object ID: Object Units:
240 ( 64) Degrees-Fahrenheit
Value = -8.7 164.4 degF, in 0.7 degF increments
Discharge air temperature measurement from IMC sensor.
Object Name: Object Type: Object ID: Object Units:
Effective Occupancy AI (read) 241 ( 95) No_Units
Value = 0 – 2
0: space occupied 1: space unoccupied 2: space occupied (timed override)
The occupancy override timer is established locally for each controller during system commissioning.
The Effective Occupancy” depends on the Occupancy Scheduler Control”, the Occupancy Override Control”, and the Occupancy Sensor Input. The Effective Occupancy” is occupied if any of these inputs are in the occupied state. Otherwise Effective Occupancy” is unoccupied.
The local IMC occupied input is ignored when a BACnet® module is used.
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Object Name: Object Type: Object ID: Object Units:
Local Outside Air Temperature AI (read) 242 ( 64) Degrees-Fahrenheit
Value = -30.6 131.6 degF, in 0.6 degF increments
Outdoor air temperature measurement from IMC sensor.
Object Name:
Local Space Temperature
Object Type:
AI (read)
Object ID:
243
Object Units:
( 64) Degrees-Fahrenheit
Value = 63.75 100.00 degF, in 0.25 degF increments
Space temperature from IMC sensor.
Object Name: Object Type: Object ID: Object Units:
Outdoor Air Damper AI (read) 244 ( 98) Percent
Value = 0 100, 255
0 – 100: 255:
Outdoor air damper position. Percent-open. No damper.
Object Name: Object Type: Object ID: Object Units:
Heat Primary AI (read) 245 ( 98) Percent
Value = 0 100
0 – 100: Current level of the primary heating capacity.
This is based on the number of gas stages operating in a gas/electric unit, or compressors operating in a heat pump, or electric resistance stages operating in an electric/electric unit.
Object Name: Object Type: Object ID: Object Units:
Heat Secondary AI (read) 246 ( 98) Percent
Value = 0 100
0 – 100: Current level of the secondary heating capacity.
This is auxiliary (electric resistance strip”) heat in a heat pump. Whether it is on in addition to the primary heat (compressor), or as emergency heat while the compressor is locked-out.
Object Name: Object Type: Object ID: Object Units:
Cool Primary AI (read) 247 ( 98) Percent
Value = 0 100
0 – 100:
Current level of the primary cooling capacity.
This is based on the number of compressors operating.
There is no secondary cooling.
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Object Name: Object Type: Object ID: Object Units:
Economizer Enabled AI (read) 248 ( 95) No_Units
Value = 0 1, 255
0:
Economizer is disabled.
1:
Economizer is enabled (outdoor air is suitable for free cooling).
255:
No economizer.
The enabled state only indicates that the IMC has determined that the outdoor air is suitable for free cooling. The unit is actually executing free cooling operation if Economizer Enabled” is 1, and Unit Status” is 3, 5, or 131.
Object Name: Object Type:
Supply Fan Status AI (read)
Object ID: Object Units:
250 ( 98) Percent
Value = 0 100
0: Supply fan off.
1: Supply fan on (single-speed fan). 2 – 100: Supply fan on (variable-speed fan; percent of full speed).
Object Name:
Space Temperature Setpt (Eff)
Object Type:
AI (read)
Object ID:
252
Object Units:
( 64) Degrees-Fahrenheit
Value = 40.0 95.0 degF, in 0.25 degF increments
The effective space temperature setpoint, which depends on:
current Temperature Setpoint (abs)”, current Temperature Setpoint Offset”, current Effective Occupancy”, most recent heating or cooling demand indicated by Unit Status”, any local setpoint adjustment, and heating and cooling deadbands and differentials set at system commissioning.
Object Name: Object Type: Object ID: Object Units:
Value = 0 – 255
Current Error AI (read) 253 ( 95) No_Units
This is the code for the currently occurring alarm condition, if any. If no alarm is currently in progress, then the Value is 0. If the Value is not zero, then Current Error” and Most Recent Error 1″ (see below) will be equal.
Refer to the IMC User’s Guide for alarm code descriptions.
Object Name: Object Type: Object ID: Object Units:
Value = 0 – 83
Error Pointer AI (read) 254 ( 95) No_Units
This value points to the next available alarm code location. It runs from 0 to 83, and then rolls-over to 0. Tracking this value and using the ten-most-recent-error-codes (see below) allows an application to determine when new errors are logged by the IMC, what those errors are, and if any errors have been missed due to network delays or for any other reason.
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Object Name:
Object Type: Object ID: Object Units: Value = 1 – 255
Most Recent Error 1, Most Recent Error 2 Most Recent Error 10 AI (read) 255, 256, …, 264 ( 95) No_Units
These are the ten most recently occurring diagnostic codes; Most Recent Error 1″ is the most recent.
The IMC does not time-stamp error codes. This must be done by the primary controller.
This is a first-in first-out buffer. Error codes are stored as they occur, and no filtering is done with respect to duplication or error code severity or priority.
When another error code is logged at Most Recent Error 1″, the value in Most Recent Error 10″ is lost, being replaced by Most Recent Error 9″.
Refer to the IMC User’s Guide for alarm code descriptions.
Object Name: Object Type: Object ID: Object Units:
Space CO2 Sensor (Eff) AI (read) 274 ( 96) Parts-per-million
Value = 0 – 2000
0 – 6: 7 – 1992: 1993 – 2000:
no sensor
valid CO2 measurement sensor error
This is the actual value being used by the IMC, and is the value measured at the IMC.
Object Name: Object Type: Object ID: Object Units:
Space CO2 Sensor (Local) AI (read) 275 ( 96) Parts-per-million
Value = 0 – 2000
0 – 6: 7 – 1992: 1993 – 2000:
no sensor
valid CO2 measurement sensor error
This is the actual value being used by the IMC, and is the value measured at the IMC.
Object Name: Object Type: Object ID: Object Units:
Space Humidity (Eff) AI (read) 276 ( 98) Percent
Value = 0 – 100
0: 1 – 99: 100:
no sensor valid relative humidity measurement sensor error
This is the actual value being used by the IMC, and is the value measured at the IMC.
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Object Name: Object Type: Object ID: Object Units:
Space Humidity (Local) AI (read) 277 ( 98) Percent
Value = 0 – 100
0: 1 – 99: 100:
no sensor valid relative humidity measurement sensor error
This is the actual value being used by the IMC, and is the value measured at the IMC.
Object Name: Object Type: Object ID: Object Units:
Value = 0 – 100
Dehumidification Setpt (Eff) AI (read) 278 ( 98) Percent
Relatve humidity setpoint for dehumidification operation.
Deadband is set locally during commissioning.
Object Name: Object Type: Object ID: Object Units:
Dehumidification Status AI (read) 279 ( 95) No_Units
Value = 0 2
0: No dehumidification installed. 1: Dehumidification installed but not running. 2: Dehumidification installed and running.
Object Name: Object Type: Object ID: Object Units:
Return Air Temperature AI (read) 281 ( 64) Degrees-Fahrenheit
Value = -8.7 164.4 degF, in 0.7 degF increments
Unit return air temperature measurement from IMC sensor.
Object Name: Object Type: Object ID: Object Units:
Building Static Pressure AI (read) 282 ( 58) Inches-of-water
Value = -0.500 0.500 inWC, in 0.004 inWC increments
Building (space) static pressure measurement from IMC sensor.
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Object Name: Object Type: Object ID: Object Units:
Duct Static Pressure AI (read) 283 ( 58) Inches-of-water
Value = 0.00 5.00 inWC, in 0.02 inWC increments
Duct (supply) static pressure measurement from IMC sensor.
Object Name: Object Type: Object ID: Object Units:
Exhaust Fan Status AI (read) 285 ( 98) Percent
Value = 0 100
0: 1: 2 – 100:
Exhaust fan off. Exhaust fan on (single-speed fan). Exhaust fan on (variable-speed fan; percent of full speed).
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BACnet® Protocol Implementation Conformance (PIC) Statement
Date: January 30, 2008 Vendor Name: Lennox Industries, Inc. Product Name: IMC BACnet® Module Product Model Number: C0CTRL50AE1L Firmware Revision: Lennox 1.03m, BACnet MSTP 1.15j BACnet Protocol Revision: 1.2 ANSI/ASHRAE 135-2001
Product Description The Integrated Modular Control (IMC) with optional IMC BACnet Module is a microprocessor-based unit controller designed to control Lennox’ L Series and S-Class gas/electric, electric/electric and heat pump rooftop units.
BACnet® Standardized Device Profile (Annex L)
BACnet Operator Workstation (B-OWS) BACnet Building Controller (B-BC) BACnet Advanced Application Controller (B-AAC) x BACnet Application Specific Controller (B-ASC) BACnet Smart Sensor (B-SS) BACnet Smart Actuator (B-SA)
BACnet® Interoperability Building Blocks (BIBBs) Supported (Annex K) DS-RP-B, DS-WP-B, DM-DDB-B, DS-RPM-B, DM-DOB-B
Segmentation CapabilityNone
Standard Object Types Supported
x Device Object x Analog Input x Analog Output x Analog Value x Binary Input x Binary Output x Binary Value
File Multi-State Input Multi-State Output
Data Link Layer Options
BACnet® IP, (Annex J)
BACnet IP, (Annex J), Foreign Device
ISO 8802-3, Ethernet (Clause 7)
ANSI/ATA 878.1, 2.5 Mb. ARCNET (Clause 8)
ANSI/ATA 878.1, RS-485 ARCNET (Clause 8), baud rate(s)
x MS/TP main (Clause 9), baud rate(s):
38.4K
MS/TP sub (Clause 9), baud rate(s): Point-To-Point, EIA 232 (Clause 10), baud rate(s):
Point-To-Point, modem, (Clause 10), baud rate(s):
LonTalk, (Clause 11), medium:
Other:
Device Address Binding
Static Device Binding:
Yes x
No
Character Sets Supported
x ANSI X3.4 IBMt/Microsoftt DBCS ISO 8859-1
ISO 10646 (UCS-2) ISO 10646 (UCS-4) JIS C 6226
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