Here are a few questions that could help you troubleshoot the issue with the backend PLC2-M7017 and equipment model setting:

1. Have you checked if the correct equipment model code was set in the machine code for error id 178?
2. Are any other
The solution for the error "Backend PLC2-M7017-Equipment model setting is abnormal, please set the model" is to locate and reset the faulty equipment's Model Number on the Backend PLC