in a plant which I work in it
there is one mfcp and one dfcp connected together
there are just 2 system fault in mfcp
"repeater comms fail" and "repeater sounder fault"
but in dfcp there is another fault.one years ago I can log in
from dfcp but now I cant access from Dfcp to mfcp.
really I cant loggin.as long as I loggin,DFCP will hang.
I checked connection even if I use another cable,but every things is okay
in DFCP I havent sounder fault,because I used a resistor and
it causes sounder fault lamp is off
anybody help me?