we use NModbus4 Response was not of expected transaction ID
时间: 2024-06-03 20:13:26 浏览: 219
The error message "Response was not of expected transaction ID" typically occurs when the Modbus master sends a request to the Modbus slave, but the response received by the master has a different transaction ID than the one the master was expecting. This can happen if there is a communication error between the master and the slave, or if the slave is not able to process the request due to some internal issue.
To resolve this issue, you can try the following steps:
1. Check the communication settings of the Modbus master and slave, such as the baud rate, parity, and stop bits. Make sure they are configured correctly.
2. Check the wiring and connections between the master and slave. Ensure that there are no loose connections or damaged wires.
3. Check if the Modbus slave is able to process the requests correctly. You can use a Modbus simulator to test the slave's functionality.
4. If none of the above steps work, you may need to debug the Modbus communication using a Modbus analyzer tool to identify the root cause of the issue.
阅读全文