martinzstl
Member
We have a compact logix L32E running RsLogix 5000 v.20, connected to two panelview plus 6 1000 over ethernet.
1) One, possibly both panelviews have started losing the connection to the PLC occasionally, after no problems for months. They are connected through a dumb switch. Cycling power on the control panel has fixed the comm loss. We are trying to figure out what would cause the comm loss.
2) We have noticed that when the panelview loses the comms, some of the momentary pushbutton commands from the panelview staid ON in the PLC. (Not sure if an operator was pressing a button when the comms went off). I tested this later by pressing a button and disconnecting the ethernet from the panelview, and the bit stays ON in the PLC. Searching online reveals that other people solve this problem by periodically unlatching all momentary bits from the panelview in the PLC. I was just wondering if there was a more elegant way to deal with this problem.
I tried to set up the panelview in the I/O Config and the PLC can see it, but I get errors because the assembly instance size is incorrect, and I can’t seem to find the correct one. If I could get it to talk is it possible to see a panelview comm fault and then clear the data in the PLC?
Thanks.
1) One, possibly both panelviews have started losing the connection to the PLC occasionally, after no problems for months. They are connected through a dumb switch. Cycling power on the control panel has fixed the comm loss. We are trying to figure out what would cause the comm loss.
2) We have noticed that when the panelview loses the comms, some of the momentary pushbutton commands from the panelview staid ON in the PLC. (Not sure if an operator was pressing a button when the comms went off). I tested this later by pressing a button and disconnecting the ethernet from the panelview, and the bit stays ON in the PLC. Searching online reveals that other people solve this problem by periodically unlatching all momentary bits from the panelview in the PLC. I was just wondering if there was a more elegant way to deal with this problem.
I tried to set up the panelview in the I/O Config and the PLC can see it, but I get errors because the assembly instance size is incorrect, and I can’t seem to find the correct one. If I could get it to talk is it possible to see a panelview comm fault and then clear the data in the PLC?
Thanks.