The ClearSCADA Modbus Slave Driver supports several Modbus function codes, enabling it to read and write data using the Modbus protocol. The function codes that the ClearSCADA Modbus Slave driver supports are:
| Modbus Function Code | Functionality |
|---|---|
|
FC1 |
Read output coils |
|
FC2 |
Read input discretes |
|
FC3 |
Read multiple holding registers |
|
FC4 |
Read input registers |
|
FC5 |
Write coil |
|
FC6 |
Write single register |
|
FC15 |
Write multiple coils |
|
FC16 |
Write multiple registers |