neptronic SKVF Series Evaporative Cooler
Introduction
The SKVF Modbus Communication Module User Guide provides information for using Neptronic® communication feature. The controller uses Modbus communication protocol over serial line in the RTU mode and provides a Modbus network interface between client devices and Neptronic SKVF devices.
The SKVF Modbus Guide assumes that you are familiar with Modbus terminology.
The following are the requirements for Modbus:
- Data Model. The Evaporative Cooler Modbus server data model uses only the Modbus Registers table.
- Register Address:
- As per protocol base (base 0); for PLC add 1 to protocol base.
- As per holding register (base 400001).
Note: Ensure that the Modbus communication software used does not have a limit on the range of the register addresses that can be viewed and supports 6-digit holding registers.
- Function Codes. The Evaporative Cooler Modbus server supports a limited function codes subset comprising:
- Read Holding Registers (0x03)
- Write Single Register (0x06)
- Write Multiple Registers (0x10)
- Exception Responses. The Evaporative Cooler Modbus server supports the following exception codes:
- Illegal data address
- Illegal data value
- Slave device busy
- Serial Line. The Evaporative Cooler Modbus over serial line uses RTU transmission mode over a two-wire configuration RS485 (EIA/TIA-485 standard) physical layer.
- The physical layer can use fixed baud rate selection or automatic baud rate detection (default) as per the Modbus Auto Baud Rate device menu item or holding register index 1.
- The supported baud rates are 9600, 19200, 38400, and 57600.
- The physical layer also supports variable parity control and stop bit configuration as per the Modbus Comport Config device menu item or holding register index 2.
- In auto baud rate configuration, if the device detects only consecutive bad frames (2 or more) for one second with any given baud rate, it will reinitialize itself to the next baud rate.
- Addressing. The Evaporative Cooler device only answers at the following address:
- The device’s unique address (1 to 246) that can be set through the device menu or through holding register index 0.
Modbus Registers
Table Glossary
| Name | Description | Name | Description |
| W | Writable Register | ASCII | For registers containing ASCII (8-bit) characters |
| RO | Read Only Register | MSB | Most Significant Byte |
| Unsigned | For range of values from 0 to 65,535, unless otherwise specified | LSB | Least Significant Byte |
| Signed | For range of values from -32,768 to 32,767, unless otherwise specified | MSW | Most Significant Word |
| Bit String | For registers with multiple values using bit mask (example, flags) | LSW | Least Significant Word |
Modbus Registers Table
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 0 | 400001 | Modbus Address and Product Type | Unsigned | MSB = Product type, not writable LSB = Modbus Address (1 to 247), writable | W | |
| 1 | 400002 | Device Baud Rate | Unsigned Scale 100 | 0, 9600, 19200, 38400, and 57600, 0 = Auto Baud Rate Detection Value/100 (e.g. 38400 baud = 384) | W | 19200 |
| 2 | 400003 | Modbus Slave Communication Port Configuration | Unsigned | 0 = No parity, 2 Stop bits 1 = Even parity, 1 Stop bit 2 = Odd parity, 1 Stop bit | W | No parity, 2 Stops bits |
| 3 | 400004 | Product Name (characters 8 & 7) | ASCII | MSB = char 6, LSB = char 7 | W | |
| 4 | 400005 | Product Name (characters 6 & 5) | ASCII | MSB = char 4, LSB = char 5 | W | |
| 5 | 400006 | Product Name (characters 4 & 3) | ASCII | MSB = char 2, LSB = char 3 | W | |
| 6 | 400007 | Product Name (characters 2 & 1) | ASCII | MSB = char 0, LSB = char 1 | W |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 7 | 400008 | Product Actual Firmware Version (in Integer x100) | Unsigned Scale 100 | 1 to 65535 (e.g. 100) | RO | |
| 8 | 400009 | Product Actual EEPROM Version (in Integer x100) | Unsigned Scale 100 | 1 to 65535 (e.g. 100) | RO | |
| 2000 | 402001 | Control Signal | Unsigned Scale 1000 | Units: Volt (V), Range: 0V to 15V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 2001 | 402002 | Room RH Signal | Unsigned Scale 1000 | Units: Volt (V), Range: 0V to 15V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 2002 | 402003 | Supply RH Signal | Unsigned Scale 1000 | Units: Volt (V), Range: 0V to 15V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 2003 | 402004 | ECM Fan Feedback | Unsigned Scale 1 | Units: Hz, Range: 0 to 30000Hz Value x 1 (e.g. 10Hz = 10) | RO | 0Hz |
| 2004 | 402005 | Float Switch Signal | Unsigned Scale 1000 | Unit: Volt (V), Range: 0V to 10V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 2005 | 402006 | Board Temperature Signal | Unsigned Scale 1000 | Unit: Volt (V), Range: 0V to 10V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 2006 | 402007 | Main Power Supply | Unsigned Scale 10 | Unit: Volt (V), Range: 0V to 40V Value x 10 (e.g. 2V = 20) | RO | 0V |
| 2007 | 402008 | ECM Fan Feedback 2 | Unsigned Scale 1 | Units: Hz, Range: 0 to 30000Hz Value x 1 (e.g. 10Hz = 10) | RO | 0Hz |
| 2008 | 402009 | Room Temperature Signal | Unsigned Scale 1000 | Units: Volt (V), Range: 0V to 15V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 2009 | 402010 | Supply Temperature Signal | Unsigned Scale 1000 | Units: Volt (V), Range: 0V to 15V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 2010 | 402011 | Control Signal | Unsigned Scale 1000 | Units: Volt (V), Range: 0V to 15V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 4000 | 404001 | Power Output Feedback Signal | Unsigned Scale 1000 | Unit: Volt (V), Range: 0V to 10V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 4001 | 404002 | ECM Fan Signal | Unsigned Scale 100 | Unit: Volt (V), Range: 0V to 10V Value x 1000 (e.g. 2V = 2000) | RO | 0V |
| 6000 | 406001 | Demand | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | RO | 0% |
| 6001 | 406002 | Power Output | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | RO | 0% |
| 6002 | 406003 | Control Input | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | W | 0% |
| 6003 | 406004 | Control Min | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | W | 0% |
| 6004 | 406005 | Control Max | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | W | 0% |
| 6005 | 406006 | Control Bias | Signed Scale 100 | Unit: %, Range: -10% to 10% Value x 100 (e.g. 10% = 1000) | W | 0% |
| 6006 | 406007 | Room RH | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | RO | 0% RH |
| 6007 | 406008 | Room RH Min | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 0% RH |
| 6008 | 406009 | Room RH Max | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 0% RH |
| 6009 | 406010 | Room RH Bias | Unsigned Scale 100 | Unit: % RH, Range: -10% RH to 10% RH Value x 100 (e.g. 10% RH = 1000) | W | 0% RH |
| 6010 | 406011 | Supply High Limit RH | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | RO | 0% RH |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 6011 | 406012 | Supply High Limit RH Min | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 0% RH |
| 6012 | 406013 | Supply High Limit RH Max | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 0% RH |
| 6013 | 406014 | Supply High Limit RH Bias | Signed Scale 100 | Unit: %, Range: -10% RH to 10% RH Value x 100 (e.g. 10% RH = 1000) | W | 0% RH |
| 6014 | 406015 | Run Time (0) | Unsigned Scale 100 | Units: Hours (h), Range: 0 to 2147483647 h Value x 100 (e.g. 10 h = 1000) | RO | 0h |
| 6015 | 406016 | Run Time (1) | Units: Hours (h), Range: 0 to 2147483647 h | |||
| 6016 | 406017 | Run Time (2) | Units: Hours (h), Range: 0 to 2147483647 h | |||
| 6017 | 406018 | Run Time (3) | Units: Hours (h), Range: 0 to 2147483647 h | |||
| 6018 | 406019 | On Time (0) | Unsigned Scale 100 | Units: Hours (h), Range: 0 to 2147483647 h Value x 100 (e.g. 10 h = 1000) | RO | 0h |
| 6019 | 406020 | On Time (1) | Units: Hours (h), Range: 0 to 2147483647 h | |||
| 6020 | 406021 | On Time (2) | Units: Hours (h), Range: 0 to 2147483647 h | |||
| 6021 | 406022 | On Time (3) | Units: Hours (h), Range: 0 to 2147483647 h | |||
| 6022 | 406023 | Water Treated Volume (0) | Unsigned Scale 100 | Units: Litres (l), Range: 0 to 9999999 l Value x 100 (e.g. 10 h = 1000) | RO | 0l |
| 6023 | 406024 | Water Treated Volume (1) | Units: Litres (l), Range: 0 to 9999999 l | |||
| 6024 | 406025 | Water Treated Volume (2) | Units: Litres (l), Range: 0 to 9999999 l | |||
| 6025 | 406026 | Water Treated Volume (3) | Units: Litres (l), Range: 0 to 9999999 l | |||
| 6026 | 406027 | Service On Time (0) | Unsigned Scale 100 | Units: Hours (h), Range: 0 to 2147483647 h Value x 100 (e.g. 10 h = 1000) | RO | 0h |
| 6027 | 406028 | Service On Time (1) | Units: Hours (h), Range: 0 to 2147483647 h | |||
| 6028 | 406029 | Service On Time (2) | Units: Hours (h), Range: 0 to 2147483647 h |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 6029 | 406030 | Service On Time (3) | Units: Hours (h), Range: 0 to 2147483647 h | |||
| 6030 | 406031 | Dead Band | Unsigned Scale 1 | Unit: %, Range: 1% to 100% Value x 1 (e.g. 10% = 10) | W | 5% |
| 6031 | 406032 | Minimum Production Output | Unsigned Scale 1 | Unit: %, Range: 0% to 100% Value x 1 (e.g. 10% = 10) | W | 10% |
| 6032 | 406033 | Maximum Production Output | Unsigned Scale 1 | Unit: %, Range: 0% to 100% Value x 1 (e.g. 10% = 10) | W | 100% |
| 6033 | 406034 | Idle Fan Speed | Unsigned Scale 1 | Unit: %, Range: 0% to 100% Value x 1 (e.g. 10% = 10) | W | 0% |
| 6034 | 406035 | Service Interval | Unsigned Scale 1 | Units: Hours (h), Range: 1000 to 3000 h Value x 1 (e.g. 10 h = 10) | W | 1000h |
| 6035 | 406036 | Board Temperature | Unsigned Scale 100 | Unit: ºC/ºF, Range: 0°C to 100°C or 32°F to 212°F Value x 100 (e.g. 5°C = 500 or 32ºF = 3200) | W | 0°C or 32°F |
| 6036 | 406037 | Power Output Feedback Bias | Unsigned Scale 1000 | Unit: V, Range: 0V to 10V Value x 1000 (e.g. 1V = 1000) | W | 0V |
| 6037 | 406038 | Power Output Feedback Min | Unsigned Scale 1000 | Unit: V, Range: 0V to 10V Value x 1000 (e.g. 1V = 1000) | W | 0V |
| 6038 | 406039 | Power Output Feedback Max | Unsigned Scale 1000 | Unit: V, Range: 0V to 10V Value x 1000 (e.g. 1V = 1000) | W | 10V |
| 6039 | 406040 | Power Output Feedback | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | RO | 0% |
| 6040 | 406041 | Dilution Ratio | Unsigned Scale 1 | Unit: %, Range: 0% to 300% Value x 1 (e.g. 10% = 10) | W | 100% |
| 6041 | 406042 | Drain Interval | Unsigned Scale 1 | Unit: Hours (h), Range: 0 to 24 h Value x 1 (e.g. 10h = 10) | W | 4h |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 6042 | 406043 | Fixed Drain Time | Unsigned Scale 1 | Unit: Hours (h), Range: 4 to 72 h Value x 1 (e.g. 10h = 10) | W | 6h |
| 6043 | 406044 | Line Rinse Time | Unsigned Scale 1 | Unit: Seconds (sec), Range: 0sec to 2000sec Value x 1 (e.g. 10sec = 10) | W | 180 sec |
| 6044 | 406045 | Water Treatment Service Volume | Unsigned Scale 1 | Unit: Litres (l), Range: 2500 to 10000 l Value x 1 (e.g. 10h = 10) | W | 7500 l |
| 6045 | 406046 | Water Supply Duty Cycle | Unsigned Scale 1 | Unit: %, Range: 8% to 70% Value x 1 (e.g. 10% = 10) | W | 10% |
| 6046 | 406047 | Water Supply Period | Unsigned Scale 1 | Unit: Seconds (sec), Range: 0sec to 180sec Value x 1 (e.g. 10sec = 10) | W | 60 sec |
| 6047 | 406048 | Room RH Network Reading | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 0% RH |
| 6048 | 406049 | Room RH Setpoint | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 40% RH |
| 6049 | 406050 | Room RH Unoccupied Setpoint | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 30% RH |
| 6050 | 406051 | Room RH Vacant Setpoint | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 20% RH |
| 6051 | 406052 | Room RH Demand Proportional Gain | Unsigned Scale 10 | No Unit, Range: 1 to 200 Value x 10 (e.g. 10 = 100) | W | 28.5 |
| 6052 | 406053 | Room RH Demand Integral Time | Unsigned Scale 10 | Unit: Seconds (sec), Range: 0 to 900 sec Value x 10 (e.g. 10 sec = 100) | W | 0 sec |
| 6053 | 406054 | Room RH Demand Derivative Time | Unsigned Scale 10 | Unit: Seconds (sec), Range: 0 to 60 sec Value x 10 (e.g. 10 sec = 100) | W | 0 sec |
| 6054 | 406055 | Room RH Demand | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | RO | 0% RH |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 6055 | 406056 | RH Supply High Limit Network Reading | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 0% RH |
| 6056 | 406057 | RH Supply High Limit Setpoint | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 80% RH |
| 6057 | 406058 | RH Supply High Limit Unoccupied Setpoint | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 80% RH |
| 6058 | 406059 | RH Supply High Limit Vacant Setpoint | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | W | 80% RH |
| 6059 | 406060 | RH Supply High Limit Proportional Gain | Unsigned Scale 10 | No Unit, Range: 1 to 200 Value x 10 (e.g. 10 = 100) | W | 28.5 |
| 6060 | 406061 | RH Supply High Limit Integral Time | Unsigned Scale 10 | Unit: Seconds (sec), Range: 0 to 900 sec Value x 10 (e.g. 10 sec = 100) | W | 0 sec |
| 6061 | 406062 | RH Supply High Limit Derivative Time | Unsigned Scale 10 | Unit: Seconds (sec), Range: 0 to 60 sec Value x 10 (e.g. 10 sec = 100) | W | 0 sec |
| 6062 | 406063 | RH Supply High Limit Demand | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | RO | 0% RH |
| 6063 | 406064 | Control Network Demand | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | W | 0% |
| 6064 | 406065 | Control Network High Limit | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | W | 0% |
| 6065 | 406066 | User Demand | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | RO | 0% |
| 6066 | 406067 | System Steam Capacity | Unsigned Scale 10 | Unit: kg/hr or lb/hr, Range: 0 to 3000 kg/hr or 0 to 6614 lb/hr Value x 10 (e.g. 10kg/hr = 100 or 10lb/hr = 100) | RO | 0 kg/hr or 0 lb/hr |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 6067 | 406068 | Room Temperature | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10°C = 1000) | W | 20.0°C or 68.0°F |
| 6068 | 406069 | Room Temperature Min | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10°C = 1000) | W | 0.0°C or 32.0°F |
| 6069 | 406070 | Room Temperature Max | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10°C = 1000) | W | 40.0°C or 104.0°F |
| 6070 | 406071 | Room Temperature Bias | Signed Scale 100 | Unit: C or F, Range: -18.0°F, max: 18.0°F or -10.0°C, max: 10.0°C Value x 100 (e.g. 10°C = 1000) | W | 0.0°C or 0.0°F |
| 6071 | 406072 | Room Temperature Network Reading | Unsigned Scale 100 | Unit: ºC/ºF, Range: -40°C to 260°C or -40°F to 500°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | W | 0°C or 32°F |
| 6072 | 406073 | Room Temperature Setpoint | Unsigned Scale 100 | Unit: ºC/ºF, Range: 0°C to 40°C or 32°F to 104°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | W | 22°C or 71.6°F |
| 6073 | 406074 | Room Temperature Unoccupied Setpoint | Unsigned Scale 100 | Unit: ºC/ºF, Range: 0°C to 40°C or 32°F to 104°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | W | 24°C or 75.2°F |
| 6074 | 406075 | Room Temperature Vacant Setpoint | Unsigned Scale 100 | Unit: ºC/ºF, Range: 0°C to 40°C or 32°F to 104°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | W | 26°C or 78.8°F |
| 6075 | 406076 | Room Temperature Demand Proportional Gain | Unsigned Scale 10 | No Unit, Range: 1 to 200 Value x 10 (e.g. 10 = 100) | W | 28.5 |
| 6076 | 406077 | Room Temperature Demand Integral Time | Unsigned Scale 10 | Unit: Seconds (sec), Range: 0 to 900 sec Value x 10 (e.g. 10 sec = 100) | W | 0 sec |
| 6077 | 406078 | Room Temperature Demand Derivative Time | Unsigned Scale 10 | Unit: Seconds (sec), Range: 0 to 60 sec Value x 10 (e.g. 10 sec = 100) | W | 0 sec |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 6078 | 406079 | Room Temperature Demand | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | RO | 0% |
| 6079 | 406080 | HRL Temperature | Signed Scale 100 | Unit: ºC/ºF, Range: -40°C to 260°C or -40°F to 500°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | RO | 0°C or 32°F |
| 6080 | 406081 | HRL Humidity | Unsigned Scale 100 | Unit: % RH, Range: 0% RH to 100% RH Value x 100 (e.g. 10% RH = 1000) | RO | 0% RH |
| 6081 | 406082 | Room Temp Demand Proportional Band | Unsigned Scale 10 | Unit: %, Range: 1% to 100% Value x 10 (e.g. 10% = 100) | W | 5% |
| 6082 | 4061083 | Temp Supply High Limit Network Reading | Signed Scale 100 | Unit: ºC/ºF, Range: -40°C to 100°C or -40°F to 212°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | W | 0°C or 32°F |
| 6083 | 406084 | Temp Supply High Limit Setpoint | Unsigned Scale 100 | Unit: ºC/ºF, Range: 0°C to 40°C or 32°F to 104°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | W | 15°C or 59°F |
| 6084 | 406085 | Temp Supply High Limit Unoccupied Setpoint | Unsigned Scale 100 | Unit: ºC/ºF, Range: 0°C to 40°C or 32°F to 104°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | W | 17°C or 62.6°F |
| 6085 | 406086 | Temp Supply High Limit Vacant Setpoint | Unsigned Scale 100 | Unit: ºC/ºF, Range: 0°C to 40°C or 32°F to 104°F, Value x 100 (e.g. 5°C = 500 or 10ºF = 1000) | W | 16°C or 60.8°F |
| 6086 | 406087 | Temp Supply High Limit Proportional Gain | Unsigned Scale 10 | No Unit, Range: 1 to 200 Value x 10 (e.g. 10 = 100) | W | 28.0 |
| 6087 | 406088 | Temp Supply High Limit Integral Time | Unsigned Scale 10 | Unit: Seconds (sec), Range: 0 to 900 sec Value x 10 (e.g. 10 sec = 100) | W | 0 sec |
| 6088 | 406089 | Modbus TCP IP Keep Alive Time Out | Unsigned Scale 1 | Unit: Minutes (min), Range: 1 to 1440 mins Value x 1 (e.g. 5 mins = 5) | W | 5 min |
| 6089 | 406090 | Temp Supply High Limit Derivative Time | Unsigned Scale 10 | Unit: Seconds (sec), Range: 0 to 60 sec Value x 10 (e.g. 10 sec = 100) | W | 0 sec |
| 6090 | 406091 | Temp Supply High Limit Demand | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | RO | 0% |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 6091 | 406092 | Temp Supply High Limit Proportional Band | Unsigned Scale 10 | Unit: %, Range: 1% to 100% Value x 100 (e.g. 10% = 100) | RO | 10% |
| 6092 | 406093 | Supply High Limit Temperature | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10°C = 1000) | W | 20.0°C or 68.0°F |
| 6093 | 406094 | Supply High Limit Temperature Min | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10°C = 1000) | W | 0.0°C or 32.0°F |
| 6094 | 406095 | Supply High Limit Temperature Max | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10°C = 1000) | W | 40.0°C or 104.0°F |
| 6095 | 406096 | Supply High Limit Temperature Bias | Signed Scale 100 | Unit: C or F, Range: -18.0°F, max: 18.0°F or -10.0°C, max: 10.0°C Value x 100 (e.g. 10°C = 1000) | W | 20.0°C or 68.0°F |
| 6096 | 406097 | Control Input | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10% = 1000) | W | 20.0°C or 68.0°F |
| 6097 | 406098 | Control Min | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10% = 1000) | W | 0.0°C or 32.0°F |
| 6098 | 406099 | Control Max | Signed Scale 100 | Unit: C or F, Range: -40.0°F, max: 212.0°F or -40.0°C, max: 100.0°C Value x 100 (e.g. 10% = 1000) | W | 40.0°C or 104.0°F |
| 6099 | 406100 | Control Bias | Signed Scale 100 | Unit: C or F, Range: -18.0°F, max: 18.0°F or -10.0°C, max: 10.0°C Value x 100 (e.g. 10% = 1000) | W | 20.0°C or 68.0°F |
| 6100 | 406101 | Demand Low Dead Band | Unsigned Scale 100 | Unit: %, Range: 0% to 100% Value x 100 (e.g. 10% = 1000) | W | 1% |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 6101 | 406102 | Network Timeout | Unsigned Scale 1 | Unit: Seconds (sec), Range: 1 to 900 sec Value x 1 (e.g. 10sec = 10) | W | 900 sec |
| 6102 | 406103 | Room RH Demand Proportional Band | Unsigned Scale 10 | Unit: %, Range: 1% to 100% Value x 10 (e.g. 10% = 100) | W | 5% |
| 6103 | 406104 | RH Supply High Limit Proportional Band | Unsigned Scale 10 | Unit: %, Range: 1% to 100% Value x 100 (e.g. 10% = 100) | RO | 10% |
| 6104 | 406105 | Completely Dry Delay | Unsigned Scale 1 | Unit: Hours (h), Range: 0 to 24 h Value x 1 (e.g. 10h = 10) | W | 2h |
| 6105 | 406106 | Hour of Day Drying Cycle | Unsigned Scale 1 | Unit: Hours (h), Range: 0 to 24 h Value x 1 (e.g. 10h = 10) | W | 0h |
| 6106 | 406107 | Drying Fan Speed | Unsigned Scale 1 | Unit: %, Range: 0% to 100% Value x 1 (e.g. 10% = 10) | W | 100% |
| 6107 | 406108 | HRL Temperature Bias | Signed Scale 100 | Unit: C or F, Range: -18.0°F, max: 18.0°F or -10.0°C, max: 10.0°C Value x 100 (e.g. 10°C = 1000) | W | 0.0°C or 0.0°F |
| 6108 | 406109 | HRL Humidity Bias | Unsigned Scale 100 | Unit: % RH, Range: -10% RH to 10% RH Value x 100 (e.g. 10% RH = 1000) | RO | 0% RH |
| 10000 | 410001 | Air Flow | Unsigned Scale 1 | 0 = Closed 1 = Open | RO | Closed |
| 10001 | 410002 | Supply High Limit | Unsigned Scale 1 | 0 = Closed 1 = Open | RO | Closed |
| 10002 | 410003 | Interlock | Unsigned Scale 1 | 0 = Closed 1 = Open | RO | Closed |
| 10003 | 410004 | Binary External Demand | Unsigned Scale 1 | 0 = 0% 1 = 100% | RO | 0% |
| 10004 | 410005 | Water Leak Detection | Unsigned Scale 1 | 0 = Ok 1 = Leak | RO | Ok |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value |
| 10005 | 410006 | RS485 Interface | Unsigned Scale 1 | 0 = No 1 = Yes | RO | No |
| 10006 | 410007 | Ethernet Interface | Unsigned Scale 1 | 0 = No 1 = Yes | RO | No |
| 10007 | 410008 | Relay Fuse | Unsigned Scale 1 | 0 = Normal 1 = Blown Fuse | RO | Normal |
| 10008 | 410009 | Control PCB Fuse | Unsigned Scale 1 | 0 = Normal 1 = Open Fuse | RO | Normal |
| 11000 | 411001 | Alarm Warning Relay | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off |
| 11001 | 411002 | Service Warning Relay | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off |
| 11002 | 411003 | Water Supply Valve | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off |
| 11003 | 411004 | Drain Valve | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off |
| 11004 | 411005 | Circulation Pump | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off |
| 11005 | 411004 | Alarm LED | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off |
| 11006 | 411005 | Power LED | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off |
| 11007 | 411008 | Buzzer | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off |
| 12000 | 412001 | Float Switch | Unsigned Scale 1 | 0 = Inactive 1 = Active | RO | Inactive |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value | |
| 12001 | 412002 | Water Treatment Service Due | Unsigned Scale 1 | 0 = No 1 = Yes | RO | No | |
| 12002 | 412003 | Service Due | Unsigned Scale 1 | 0 = Not Allowed 1 = Allowed | W | Not Allowed | |
| 12003 | 412004 | Run While Water Service Alarm | Unsigned Scale 1 | 0 = Not Allowed 1 = Allowed | W | Not Allowed | |
| 12004 | 412005 | Startup Line Rinse | Unsigned Scale 1 | 0 = Off 1 = On | W | Off | |
| 12005 | 412006 | Run While Service Alarm | Unsigned Scale 1 | 0 = Not Allowed 1 = Allowed | W | Allowed | |
| 12006 | 412007 | HRL Lock Setpoint | Unsigned Scale 1 | 0 = Unlock 1 = Lock | W | Unlock | |
| 12007 | 412008 | Network Control State | Unsigned Scale 1 | 0 = Normal 1 = Fault | W | Normal | |
| 12008 | 412009 | Notify Alarm | Unsigned Scale 1 | 0 = Off 1 = On | W | Off | |
| 12009 | 412010 | Notify Warning | Unsigned Scale 1 | 0 = Off 1 = On | W | Off | |
| 12010 | 412011 | Notify App Msg | Unsigned Scale 1 | 0 = Off 1 = On | W | Off | |
| 15000 | 415001 | Modbus Server Units | Unsigned Scale 1 | 0 = Metric 1 = Imperial | W | Metric | |
| 15001 | 415002 | Control Signal Type | Unsigned Scale 1 | 0 = 0-10Vdc 1 = 2-10Vdc | 2 = 4-20mA 3 = 0-20mA | W | 0-10Vdc |
| 15002 | 415003 | Room RH Signal Type | Unsigned Scale 1 | 0 = 0-10Vdc 1 = 2-10Vdc | 2 = 4-20mA 3 = 0-20mA | W | 0-10Vdc |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value | |
| 15003 | 415004 | Supply RH Signal Type | Unsigned Scale 1 | 0 = 0-10Vdc 1 = 2-10Vdc | 2 = 4-20mA 3 = 0-20mA | W | 0-10Vdc |
|
15004 |
415005 |
Control Profile | Unsigned Scale 1 | 0 = ExternAnalog 1 = ExternNetwork 2 = InternHumAnalog 3 = InternHumNetwork | 4 = InternCoolAnalog 5 = InternCoolNetwork 6 = HRLHum 7 = HRLCool 8 = Custom |
W |
ExternAnalog |
| 15005 | 415006 | Modulating High Limit Profile | Unsigned Scale 1 | 0 = Disabled 1 = ExternAnalog 2 = ExternNetwork 3 = InternHumAnalog | 4 = InternHumNetwork 5 = InternCoolAnalog 6 = InternCoolNetwork 7 = Custom | W | Disabled |
| 15006 | 415007 | Occupancy State | Unsigned Scale 1 | 0 = Occupied 1 = Unoccupied | 2 = Vacant 3 = Off | RO | Occupied |
| 15007 | 415008 | Room RH Source | Unsigned Scale 1 | 0 = None 1 = RoomRH | 2 = Network 3 = HRL | W | None |
| 15008 | 415009 | Room RH Setpoint Source | Unsigned Scale 1 | 0 = None 1 = Internal | 2 = ControlInput | W | None |
| 15009 | 415010 | RH Supply High Limit Reading Source | Unsigned Scale 1 | 0 = None 1 = SuppyHLRH | 2 = Network | W | None |
| 15010 | 415011 | RH Supply High Limit Setpoint Source | Unsigned Scale 1 | 0 = None 1 = Internal | 2 = ControlInput | W | None |
| 15011 | 415012 | Control Demand Source | Unsigned Scale 1 | 0 = None 1 = ControlInput | 2 = RoomDemand 3 = Network | W | ControlInput |
| 15012 | 415013 | Control High Limit Source | Unsigned Scale 1 | 0 = None 1 = ControlInput | 2 = RHSupplyHLDemand 3 = Network 4=TempSupplyHLDemand | W | None |
| 15013 | 415014 | Control Cutout State | Unsigned Scale 1 | 0 = Off 1 = Normal 2 = LowLimit | 3 = HighLimit 4 = NoAirFlow 5 = Interlock | RO | Off |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value | |
| 15014 | 415015 | State | Unsigned Scale 1 | 0 = Off 1 = Idle 2 = LineRinse 3 = Filling | 4 = Draining 5 = Running 6 = Alarm 7 = Drying | RO | Off |
| 15015 | 415016 | System Alarm | Unsigned Scale 1 | 0 = Normal 1 = DrainTimeout 2 = FillTimeout | 3 = WaterLeak 4 = FanDefect | RO | Normal |
| 15016 | 415017 | Fan Request | Unsigned Scale 1 | 0 = Off 1 = Default 2 = On | W | Default | |
| 15017 | 415018 | Pump Request | Unsigned Scale 1 | 0 = Off 1 = Default 2 = On | W | Default | |
| 15018 | 415019 | Water Supply Request | Unsigned Scale 1 | 0 = Off 1 = Default 2 = On | W | Default | |
| 15019 | 415020 | Room Temperature Setpoint Source | Unsigned Scale 1 | 0 = None 1 = Internal | 2 = ControlInput | W | None |
| 15020 | 415021 | Temp Supply High Limit Reading Source | Unsigned Scale 1 | 0 = None 1 = SuppyHLTemp | 2 = Network | W | None |
| 15021 | 415022 | Temp Supply High Limit Setpoint Source | Unsigned Scale 1 | 0 = None 1 = Internal | 2 = ControlInput | W | None |
| 15022 | 415023 | Room Temperature Source | Unsigned Scale 1 | 0 = None 1 = RoomTemp | 2 = Network 3 = HRL | W | None |
| 15023 | 415024 | Room Temperature Signal Type | Unsigned Scale 1 | 0 = 0-10Vdc 1 = 2-10Vdc | 2 = 4-20mA 3 = 0-20mA | W | 0-10Vdc |
| 15024 | 415025 | Supply Temperature Signal Type | Unsigned Scale 1 | 0 = 0-10Vdc 1 = 2-10Vdc | 2 = 4-20mA 3 = 0-20mA | W | 0-10Vdc |
| Protocol Base | Holding Register | Description | Data Type | Units, Limits, State Texts | Writa ble | Default Value | |
| 15025 | 415026 | Control Signal Type | Unsigned Scale 1 | 0 = 0-10Vdc 1 = 2-10Vdc | 2 = 4-20mA 3 = 0-20mA | W | 0-10Vdc |
| 15026 | 415027 | System Power State | Unsigned Scale 1 | 0 = Off 1 = On | RO | Off | |
| 15027 | 415028 | Recirculation Request | Unsigned Scale 1 | 0 = None 1 = ResetAlarms 2 = Drain | 3 = ResetServCnt 4 = ResetWtrServCnt 5 = Filling | W | None |
| 15028 | 415029 | DirectFeed Request | Unsigned Scale 1 | 0 = None 1 = ResetAlarms | 3 = ResetServCnt 4 = ResetWtrServCnt | W | None |
400 Lebeau blvd, Montreal, Qc, H4N 1R6, Canada
www.neptronic.com
Toll free in North America: 1-800-361-2308 Tel.: (514) 333-1433 Fax: (514) 333-3163 Customer service fax: (514) 333-1091
Monday to Friday: 8:00am to 5:00pm (Eastern time)
