Troubleshooting
4-40
Part 1105779-04
E 2014 Nordson Corporation
Testing Ethernet Cables
A typical Ethernet cable test device consists of two separate units: a main
unit and a remote unit. Use the main unit alone to test patch cables and
both units to test cables after pulling them through conduit and connecting
them to the termination modules.
Patch cables: These are short network cables used within electrical panels
to make connections between Fieldbus controllers or couplers and
field-terminated cable runs. Patch cables are factory assembled with male
RJ-45 connectors at each end.
Cable runs: These are longer network cables that run through conduit to
connect Fieldbus controllers or couplers to a common network interface
device. Only one end of the cable has a male RJ-45 connection. The other
end must be field-terminated to a termination module.
Refer to Ethernet Network Installation in the Installation section for more
information about Ethernet cables and installation.
Local Test − Patch Cables
1. Connect both male RJ-45 connectors to the main unit.
2. Turn the unit on. A red LED will blink indicating a test in progress.
3. Watch the cable test LEDs. If all are green, then the cable is good. If
one or more flash red, then the cable is faulty and must be replaced.
Remote Test − Cable Run
1. Connect one end of a previously tested patch cable into the termination
module connected to the cable run. This provides you with two RJ-45
male connectors on the cable run to connect to the test unit.
2. Plug the other end of the patch cable into the remote unit.
3. Plug the RJ-45 male connector at the network interface end of the cable
run into the main unit of the cable tester.
4. Turn the main unit on.
5. Watch the cable pair LEDs on the remote unit.
S If all LEDs are green, then the cable run is good.
S If one or more LEDs flash red, then either the termination module
connections are miswired or incomplete, or the cable is faulty.
Make sure the cable connections to the termination module are correct.
Check each connection. If you suspect a bad connection, you can pull the
lead out of the module and punch it down again closer to the jacket.
If the termination module connections are good, then the cable is faulty and
must be replaced.
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