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Modbus RTU Function List
 
The DGH D1000M, D5000M, and DIN-100 series products are Modbus RTU compatible. The Modbus RTU protocol is widely accepted throughout the PLC and data acquisition industry for communicating data. A standardized list of control functions read and control I/O signals within a process system. The supported list of master function codes are listed below.
 
Modbus Function Code DGH ASCII Equivalent Definition
01 - Read Coil Status $1DI Read Digital Inputs
04 - Read Input Register $1RD Read Analog Input Value
05 - Force Single Coil   Set One Digital Output
06 - Preset Single Register    Control Special Functions
15 - Force Multiple Coils $1DOxx Set Multiple Digital Outputs
 
Virtually every commercial data acquisition, data collection or process control program software program available today contains support for the Modbus RTU protocol. Check with your software vendor to ensure support.
 
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