Neptronic Cmmb102 Dual Mini I-o Communication Module Instruction Manual

neptronic CMMB102 Dual Mini I-O Communication Module

Description

The CMMB extends your BACnet or Modbus network when your application requires additional inputs and outputs on a physical controller. Combining the 8 inputs and outputs of the CMMB with your Building Automation System provides simple expansion of a new or existing controller and reduces unnecessary costs of additional components.

Features

Power & Communication

• 24Vac or 24Vdc supply
• BACnet® MS/TP or Modbus communication port (selectable)

Inputs & Outputs

• 4 universal inputs
• 2 universal outputs (supervised)
• 2 binary outputs (supervised)

Installation

• 4 override switches to manually control each output
• LED status indication of each input and output
• DIN rail mounting
• Removable, non-strip, raising clamp terminals
• Removable see-through panel for easy access to DIP switches

Network Communication

• BACnet® MS/TP or Modbus communication port (selectable via DIP switch)
• Select MAC address via DIP switch or via network

BACnet®

• MS/TP @ 9600, 19200, 38400 or 76800 bps
• Automatic baud rate detection
• Automatic device instance configuration
• Copy & broadcast configuration to other CMMB modules

Modbus

• • Modbus @ 9600, 19200, 38400 or 57600 bps
  • RTU Slave, 8 bits (configurable parity and stop bits)
  • Connects to any Modbus master

Technical Specifications

Connections and Configurations

Please note that all jumper settings must also be set to the same value through BACnet. Some additional configurations are only available through BACnet (see Network Conditions on page 4).

MAC Address DIP Switch (DS1)

MAC address for BACnet and Modbus communication, are selectable by DIP switch DS1 using binary logic.

BACnet

• Highest MAC address is 254.
• Default is all switches OFF = MAC address 0
• If you do not change device instance in program mode, it will be automatically modified according to the MAC address.

Modbus

• Highest MAC address is 247.
• Default is all switches OFF = MAC address 1
• MAC address is binary value +1
• There is no device instance for Modbus.

LEDs

Power

• On = Input voltage normal
• Off = No power

Status

• Flashing = Normal operation (watchdog)

RX/TX (BACnet)

• Flashing = Receiving (RX) and/or transmitting (TX) data.

RX/TX (Modbus)

• Flashing = Receiving (RX) and/or transmitting (TX) data.

Input Status

• On = Input on
• Off = Input off
• Flashing = Input not connected (thermistor setting only)
• Analog = When Universal Inputs are set to analog values (Vdc, mA, or Thermistor); the LED intensity corresponds to the input value. For example: At 10Vdc, the LED will be fully on. At 5Vdc, the LED will be at 50% intensity. At 0 Vdc, the LED will be off.

Output Status

• On = Activated
• Off = Deactivated
• Flashing = Output pulsed
• Analog = When Universal and Analog outputs are set to analog values (Vdc); the LED intensity corresponds to the output value.
  For example: At 10Vdc, the LED will be fully on. At 5Vdc, the LED will be at 50% intensity. At 0 Vdc, the LED will be off.

Network Conditions

Please note that all jumper settings must also be set to the same value through BACnet or Modbus. The following is a list of conditions and additional BACnet or Modbus objects.

Universal Inputs (AI1-AI4)

• For temperature thermistor reading: with the jumper set to Thermistor, set the AI input type to 10K_TypeG, 10K_Type3A1, 10K_Type4A1, 10K_NTC, 20K_Type6A1 or 30K_Type6A1.
• For on/off contact input reading: with the hardware jumper set to Thermistor, set the AI input type to Digital_Input. The polarity can also be set to direct or reverse. For example, in Reverse an “on” signal would be recognized as an “off” signal.
• For analog 0-10 Vdc input reading: with the hardware jumper set to 0-10 Vdc, set the AI input type to 0_10V

Universal/Analog Outputs (AO1-AO2)

• You can set the polarity to direct or reverse. For example, in reverse the output range would be 10-0 Vdc instead of 0-10 Vdc. The polarity applies to all settings 0-10Vdc, on/off and pulsed.
• You can also set the outputs to pulsed or digital on/off.
• A fixed output value can only be modified via BACnet when the override switch is in the “Automatic” position.

Binary Outputs (BO1-BO4)

• A fixed output (open/closed) can only be modified via BACnet when the override switch is in the “Automatic” position.
• The displayed text can be set to either Open/Closed, On/Off, or Alarm/Normal (BACnet only).

Supervised Outputs

• All outputs are fully supervised via BACnet. This provides the actual state of the output including any manual overrides done using the on-board switches.

BACnet Objects Table

Modbus Registers

• Register address:
  • As per protocol base (base 0); for PLC add 1 to protocol base.
  • As per holding register (base 40001)
• Functions:
  • 03 Read Holding Register
  • 06 Write Single Register
  • 16 Write Multiple Registers
• Error Codes:
  • 02 Illegal Data Address
  • 03 Illegal Value
  • 06 Slave Device Busy
• W = Writable register, [blank] = read only.
• No Real number in modbus register, use scale to calculate real number. Register = Real number * Scale => Real number = Register / Scale. Scale could be 1, 10 or 100
• Attention when writing a register that contains a bit string. If bit is writable (conditional or not), the write will always be accepted. If bit is reserved or not writable, the write will be ignored and will keep its actual state.
• Use READ-MODIFY-WRITE sequence.

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www.neptronic.com
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Tel.: (514) 333-1433
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References

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