Q4: How To Write Data To Output Channels On A Modbus Rtu Slave Device - ICP DAS USA MDC-700 Series User Manual

Q4: How to write data to output channels on a Modbus RTU slave device?
A4:
Step 1: Edit the polling definition for the output channels with read function code in the
config.csv file. (For example, use 01 to read DO channels, 03 to read AO channels)
UseComPort SlaveModbusID FunctionCode RegStartAddr RegCount
1
1
2
2
2
2
Step 2: Import the config.csv file into the MDC‐700, wait the MDC‐700 reboot in 5 seconds, and
then check the addresses for the local registers mapped to the output channels.
Step 3: Write data with corresponding function code (05/06/15/16) on your Modbus master device
to the local registers mapped for the output channels, the MDC‐700 will process writing
operations to the slave devices.
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