What to do if Robopac Packaging equipment displays E50 WARNING “BUS CAN OPEN COMMUNICATION ALARM”?
- LLisa YoungAug 31, 2025
If the Robopac Packaging equipment displays an E50 WARNING “BUS CAN OPEN COMMUNICATION ALARM”, it means The PLC can’t gather information from the CAN OPEN hubs. Check the BUS connection on the modules and on the PLC.





