| Modbus TCP server | Modbus TCP slave device |
| Only configure IP address | Need to configure parameters and I/O mapping |
| For Modbus TCP client, all %MW address of server can be R/W. | For I/O scanner, only %IW area (2~40 words) can be R/W, %QW area (2~40 words) are read only, and actual %MW address of slave device cannot be visited. |
| No need to configure “Unit ID” | Unit ID (1~247) should be same the unit ID setting in Modbus TCP I/O scanner. |
| No visualized list for communicated address. | Have a clear and visualized interface to monitor all communicated variables. |
| The connection to one client may be closed when more than 8 connections are needed. | The connection to the Master client is never forcefully closed, when IPMaster Address is configured. |
Please see attached ModbusTCP Slave Device explanation document.
Released for: Schneider Electric Saudi Arabia
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