GE GEH6505A - Manual (Page 19)

POWER LEADER™ Ethernet Gateway
Chapter 6 – Troubleshooting Guide
15
Chapter 6 – Troubleshooting Guide
The following guide is provided for troubleshooting
and isolating common problems. It does not cover
every possible condition. Contact the ED&C
Customer Support Center at 800-843-3742 if the
problem is not resolved by these procedures.
Symptom Possible Cause Corrective Action
1. No response at either
host PC or dumb
terminal from the
Ethernet Gateway.
Lack of power.
Ethernet Gateway internal
failure.
Check that control power cable is working and
correctly connected.
Remove and reapply power to the Ethernet
Gateway to see if the failure clears itself
(possibly caused by external noise). Contact
Customer Support if the problem persists.
WARNING:
Voltages hazardous to personnel and equipment may
be present at the power connection.
2. No response at host
PC from the Ethernet
Gateway, but terminal
connection is OK.
Faulty Ethernet wiring
between Ethernet Gateway
and host PC
Ethernet driver may be
incorrect.
Check that the Ethernet connector is properly
wired and firmly seated. Test wiring for
continuity and polarity to host PC.
Check with your system administrator as to
which Ethernet driver is being used (DIX or
IEEE). Make sure Gateway is set accordingly
(Section 3-5).
3. Ethernet connections
OK, but no response
from RS485
device(s).
Faulty RS485 wiring between
Ethernet Gateway and
RS485 networks.
Lack of control power at
RS485 device(s).
Check that the RS485 connector is properly
wired and firmly seated. Test wiring for
continuity and polarity on RS485 wiring.
Check that control power present and correctly
connected at device(s).
4. Some devices on
RS485 networks not
recognized at host.
Addressing problems or too
many devices on segment
Refer to Section 5-1 to diagnose the precise
problem and correct accordingly.