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Module Slave Address, Starting Address, and Function Codes

All values below are given in base 10.

Input Modules

Start Address Product name Supported Modbus Function Codes
0-7 MD-DIDC8 DC Input 1
100-103 MD-ADIN4 AD Input 3
200-207 MD-HADIN4 High Resolution AD Input 3
300-303 MD-THRT4 RTD Temperature Input 3

Output Modules

Start Address Prodcut name Supported Modbus Function Codes
3000-3007 MD-DOSO8 DC Source Output 1, 5, 15
3100-3107 MD-DOSI8 DC Sink Output 1, 5, 15
3200-3207 MD-DORL8 Relay Output 1, 5, 15
3300-3301 MD-DAOUT2 AD Output (Voltage) 3, 6, 16
3400-3401 MD-DAOUT2B AD Output (Current) 3,6, 16
  • Baud Rate: 57600, Data Bits: 8, Parity: None, Stop Bits: 1
  • MODBUS RTU protocol
  • Broadcast mode not supported

Module ID (Modbus Slave Address) Assignment On the front of the module, there is a rotary switch labeled ID, that is used to select the Modbus slave address for the module. When installing multiple modules of the same type, the ID for each module should be unique.

Rotary switch position 0 corresponds to Modbus slave address 10. If the ID is changed after the module is powered on, it must be power cycled for the new ID to take effect.


modport/modport_module_starting_address_and_rtu_function_codes/index.txt · Last modified: 2023/05/31 04:27 by COMFILE Technology