I have a PLC5 that is faulting and I am unable to go on line when the controller run/fault light is red. This Processor has been in use for 25 years and had a
PC / HMI added a few years ago that has a Digi Switch between it (Eternet) to the DF1 Channel 0 on PLC. Started faulting last week and cycling power to PLC
will restore it (power stays on PC/HMI) and it will work sometimes for Hours.
I was hoping I could be on line to see what fault is, can I add a (U) S:0/1
as last rung to make sure it is not a math overflow.
Any Ideas,Thanks
PC / HMI added a few years ago that has a Digi Switch between it (Eternet) to the DF1 Channel 0 on PLC. Started faulting last week and cycling power to PLC
will restore it (power stays on PC/HMI) and it will work sometimes for Hours.
I was hoping I could be on line to see what fault is, can I add a (U) S:0/1
as last rung to make sure it is not a math overflow.
Any Ideas,Thanks