merlin00724
Member
hey everyone, long time since my last post.
my issue is we have a bank of valves on devicenet with a controllogix controller. when we have a device failure like no comms, bus off, etc the inputs in the logic are maintained at their last state. for example, a valve is closed and making the closed prox and this prox input is true in the program. if you unhook the cable going to the valve, the input stays true in the program. the DV scanner of course displays node# and e78, but the input stays true in the logic therefor not faulting and alarming the valve on our scada.
I think this is a parameter on each device in the dnet program. maybe parameter 2 and/or 3?? I'm not sure though. can someone help me out?
thanks!!!
my issue is we have a bank of valves on devicenet with a controllogix controller. when we have a device failure like no comms, bus off, etc the inputs in the logic are maintained at their last state. for example, a valve is closed and making the closed prox and this prox input is true in the program. if you unhook the cable going to the valve, the input stays true in the program. the DV scanner of course displays node# and e78, but the input stays true in the logic therefor not faulting and alarming the valve on our scada.
I think this is a parameter on each device in the dnet program. maybe parameter 2 and/or 3?? I'm not sure though. can someone help me out?
thanks!!!