5.Modbus Module Operation
5.1.Modbus Commands
When a MODBUS command is used, the Modbus module translates it to the corresponding T2 register access protocol.
| MODBUS FUNCTION CODE |
| T2 COMMAND |
|
|
|
|
01 | Read Coil Status | DR | Read Device/Register |
02 | Read Input Status | DR | Read Device/Register |
03 | Read Holding Register | DR | Read Device/Register |
04 | Read Input Register | DR | Read Device/register |
05 | Force Single Coil | DW | Write Device Register |
06 | Force Single Register | DW | Write Device/Register |
08 | Loop Back Diagnostic test | **** Not Supported by | |
15 | Force Multiple Coils | DW | Write Device/register |
16 | Preset Multiple Registers | DW | Write Device/register |
For more information on the Modbus protocol, please refer to the Modbus Protocol Reference Guide, see Additional References.
For more information on the T2 register access protocol, please refer to the Computer Link Function Operation Manual, see Additional References.
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