set_modbus_slave(address, val)
Features
It is used to export values to the General Purpose Register area of the Modbus TCP Slave.
Parameter
| Parameter Name | Data Type | Default Value | Description |
|---|---|---|---|
address | int | - | Address value of GPR area (128~255) |
val | int | - | 2byte value (0~65535) |
Return
| Value | Description |
|---|---|
0 | Success |
Negative value | Failure |
Exception
| Exception | Description |
|---|---|
DR_Error (DR_ERROR_TYPE) | Parameter data error occurred |
DR_Error (DR_ERROR_VALUE) | Parameter value is invalid |
DR_Error (DR_ERROR_RUNTIME) | C Extension module error occurred |
DR_Error (DR_ERROR_STOP) | Program terminated forcefully |
Example
PY
set_modbus_slave(128, 0)
set_modbus_slave(255, 65535)