Troubleshooting and technical support, Troubleshooting checklist – Comtrol 500 DeviceMaster User Manual
Page 63
DeviceMaster 500 User Guide: 2000501 Rev. A
Troubleshooting and Technical Support - 63
Troubleshooting and Technical Support
This section contains troubleshooting information for your DeviceMaster 500. You
should review the following subsections before calling Technical Support because
they will request that you perform many of the procedures or verifications before
they will be able to help you diagnose a problem.
•
•
•
Daisy-Chaining DeviceMaster 500 4-Port Units
If you cannot diagnose the problem, you can contact
Troubleshooting Checklist
The following checklist may help you diagnose your problem:
•
Verify that you are using the correct types of cables on the correct connectors
and that all cables are connected securely.
Note: Most customer problems reported to Comtrol Technical Support are
eventually traced to cabling or network problems.
•
Isolate the DeviceMaster 500 from the network by connecting the device
directly to a NIC in a host system.
•
Verify that the Ethernet hub and any other network devices between the
system and the DeviceMaster 500 are powered up and operating.
•
Reset the power on the DeviceMaster 500 and watch the PWR or Status light
activity.
•
If the device has a power switch, turn the device’s power switch off and on,
while watching the LED diagnostics.
•
If the DeviceMaster 500 does not have a power switch, disconnect and
reconnect the power cord.
•
Verify that the hardware MAC address in NS-Link matches the address on the
DeviceMaster 500.
Model
Connected to
Ethernet
Cable
Connector Name
1-Port
Ethernet hub
or NIC
Standard
10/100 ETHERNET
1-Port Embedded
Ethernet hub
or NIC
Standard
RJ45 port (not
labeled)
4-Port
NIC
Standard
DOWN
Ethernet hub
Standard
UP
PWR or Status LED
Description
5 sec. off, 3 flashes, 5 sec. off, 3 flashes ...
Redboot
™
checksum failure.
5 sec. off, 4 flashes, 5 sec. off, 4 flashes ...
SREC load failure.
5 quick flashes
The default application is starting up.
10 sec. on, .1 sec. off, 10 sec. on .1 sec. off ...
The default application is running.