D
Hi,
I am having a problem of "COMMUNICATION OFFLINE." We are using controllogix redundancy system and two 1756 ENBT card. The Ethernet cable from two ENBT card is directly hook up to CISCO HUB 32port. There around 12 outgoing Ethernet cables, 6 of them are for wireless Ethernet Communication using "RadioLinx." One of them is a fiber optic used for our SCADA communication, and the rest is used for HMI PanelView Plus communication. For four years it is working fine just recently when we frequently got "COMMUNICATION OFFLINE" Fault. There is no switchover from PLC 1 and PLC2 in the time of communication failure, we did replace the CISCO HUB but still problem not solve.
I really don't know what is causing the offline, I’m guessing that it might be one of those outgoing Ethernet cables.
Please help and thanks in advance.
Don
I am having a problem of "COMMUNICATION OFFLINE." We are using controllogix redundancy system and two 1756 ENBT card. The Ethernet cable from two ENBT card is directly hook up to CISCO HUB 32port. There around 12 outgoing Ethernet cables, 6 of them are for wireless Ethernet Communication using "RadioLinx." One of them is a fiber optic used for our SCADA communication, and the rest is used for HMI PanelView Plus communication. For four years it is working fine just recently when we frequently got "COMMUNICATION OFFLINE" Fault. There is no switchover from PLC 1 and PLC2 in the time of communication failure, we did replace the CISCO HUB but still problem not solve.
I really don't know what is causing the offline, I’m guessing that it might be one of those outgoing Ethernet cables.
Please help and thanks in advance.
Don