Hello. Could anybody with PLC5 networks experience give me some idea what could be wrong with our network?
We have Controller 5/25 with remote I/O racks. ( some are old Uticor PMD 450)
Recently the Communication timeout fault began to show up. I can clear it only by resetting the power switch for Chassis 4.
Why installers used only one 150Ohms resistor on Chassis2 and nothing on Controller or Chassis 4 side?
Can I check network with voltmeter?
The AC voltage reading BLUE-Ground, Clear-Ground fluctuates from 0.6 to 2.2 vac
We have Controller 5/25 with remote I/O racks. ( some are old Uticor PMD 450)
Recently the Communication timeout fault began to show up. I can clear it only by resetting the power switch for Chassis 4.
Why installers used only one 150Ohms resistor on Chassis2 and nothing on Controller or Chassis 4 side?
Can I check network with voltmeter?
The AC voltage reading BLUE-Ground, Clear-Ground fluctuates from 0.6 to 2.2 vac