CS3000 VNET failure
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Today I noticed that one VNET was showing a red X... The system error message read: CONTROL bus failure. Example: V net/VL net NO.1 Fail (Domain NO.1). Meaning: One of the dual-redundant Control buses in that domain has failed (the domain indicated by the displayed information is the one affected). I checked the cable connectors and found no problems. I tried using a 50-ohm terminator, but the issue persisted; I’m not sure what’s causing it. I’d appreciate some advice!
Is there an operation station that isn’t enabled? Here, if an operation station isn’t activated, it can also cause a V net failure.
The operation stations are all in use; the light for that VNET BUS that has a problem at the control station keeps flashing non-stop
Swap the two network cables to see if there is a change in position or if nothing changes.
Was it the position of the Internet cable for the network card on a certain workstation that was changed?????
Well, it’s just swapping the two redundant wires around. (:Q How many characters exactly do I have to enter? This restriction is really annoying. ）
Let’s see if it could be the network cable that has been damaged by mice, or it might also be a false alarm on the part of the system. Our plant is equipped with an Hilscher DCS system, and the diagnostic interface shows that both redundant network cables at one operation station have failed, yet operations continue to function normally.
It’s possible that the 701 card in one of the operation stations is malfunctioning and is sending incorrect data, which causes the light on the control station to flash very rapidly
Try replacing the cable. Be careful at the place where the thick cable changes to the thin one