GE Industrial Solutions POWER LEADER PMCS Network Architecture Guide - Manual (Page 57)

Power Management Control System
Chapter 4 – Trouble-Shooting
47
Symptom Possible Cause Corrective Action
4.
No communication to
one or more commnet
IEDs. 1. The IED or a Repeater on
that segment is not
powered.
Check that control power is supplied to all IEDs. Check
that two LEDs are lit on each Repeater, indicating that
control power is present. If the IED or Repeater does
not operate when control power is present, contact the
GE Resolution Center at 1-888-GE-RESOLV.
2. The IED is not addressed. Set the commnet address at the IED and configure the
Modbus Concentrator to recognize the IED and assign
it a Modbus-equivalent address. Enter the Modbus-
equivalent address into the PMCS.
3. Two or more IEDs on the
Modbus Concentrator
have the same address.
Check the Modbus Concentrator and IEDs for
duplicate address assignments. Change the address of
the affected IED (at the IED and the Concentrator),
then attempt to communicate with the original address
to see if another IED has that address.
5.
Intermittent communi-
cation to an IED
(Modbus or commnet). 1. The network
configuration is incorrect.
Check that the network conforms to the rules in
Chapter 2.
2. The IED or a Repeater is
not powered or has
inconsistent power.
Check the control power supplied to the IED and to
any Repeaters on the network or segment.
3. Two or more IEDs on the
network have the same
address.
Check the host for duplicate address assignments.
Change the address of the affected IED, then attempt
to communicate with the original address to see if
another IED has that address.