| embedded systems - modbus - message format - TCP | What links here? |
| Name | Length | Function |
|---|---|---|
| Transaction Identifier | 2 | For synchronization between messages of server and client |
| Protocol identifier | 2 | 0 for Modbus/TCP |
| Length field | 2 | Number of remaining bytes in this frame |
| Unit identifier | 1 | Slave address (255 if not used) |
| Function code | 1 | Function codes as in other variants |
| Data bytes | N | Data as response or commands |
| filename: | embedded systems - modbus - message format - TCP |
| filename: | embedded%20systems%20%2D%20modbus%20%2D%20message%20format%20%2D%20TCP |
| last edit: | September 27 2019 19:53:21 (2180 days ago) |
| ct | = 1758041671.000000 = September 16 2025 12:54:31 |
| ft | = 1569628401.000000 = September 27 2019 19:53:21 |
| dt | = 188413270.000000 |