I’m experiencing a communication issue between a WAGO 750-8112 (Firmware 28) PLC and a Weintek cMT2108X2 HMI.
Configuration
- Created and updated the latest Symbol Configuration in the PLC project.
- Downloaded the project to the PLC.
- Imported PLC tags into EasyBuilder Pro from the Symbol Configuration file.
- Selected WAGO TCP/IP as the communication driver.
- PLC IP address configured correctly.
- Port: 11740
- Username: admin
- Password: wago
Issue
The HMI continuously shows “Device No Response”.
Interestingly, if I link a BOOL variable to a toggle button on the HMI, I can successfully write to the PLC and the bit changes state as expected.
However:
- The HMI still reports “Device No Response”.
- PLC variables cannot be read or displayed on the HMI.
- Numeric values remain unavailable.
- Communication appears to work for writing but not for reading.
Since writing to PLC variables works, I suspect the connection is only partially established or there may be a read-access/configuration issue.
Any suggestions or experience with this setup would be greatly appreciated.