Popo Karimu
Member
Good day,
I got a concern regarding the Redundancy setup. The problem is when communications get interrupted between the Primary PLC and the remote I/O rack. The outputs of a Digital Output module get triggered unintentionally shutting down critical processes in the plant. The PLC we're using is 1756-L73 with 1756-EN2T Ethernet module.
I'm wondering whether the PLC being connected to a POE network could be a problem (see attached system architecture).
Could there be a technique to make redundancy configuration fail safe? Or I probably need a comms failure signal to Secondary and remote I/O rack?! Thank you very much.
Sincerely,
AndreiK
I got a concern regarding the Redundancy setup. The problem is when communications get interrupted between the Primary PLC and the remote I/O rack. The outputs of a Digital Output module get triggered unintentionally shutting down critical processes in the plant. The PLC we're using is 1756-L73 with 1756-EN2T Ethernet module.
I'm wondering whether the PLC being connected to a POE network could be a problem (see attached system architecture).
Could there be a technique to make redundancy configuration fail safe? Or I probably need a comms failure signal to Secondary and remote I/O rack?! Thank you very much.
Sincerely,
AndreiK