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Modbus RTU Function List
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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. |
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| Modbus Function Code |
DGH ASCII Equivalent |
Definition
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| 01 - Read Coil Status |
$1DI |
Read Digital Inputs |
| 04 - Read Input Register |
$1RD |
Read Analog Input Value |
| 05 - Force Single Coil |
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Set One Digital Output |
| 06 - Preset Single Register |
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Control Special Functions |
| 15 - Force Multiple Coils |
$1DOxx |
Set Multiple Digital Outputs |
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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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