Manual

DeviceMaster LT User Guide: 2000586 Rev. B
Troubleshooting and Technical Support - 111
Troubleshooting and Technical Support
This section contains troubleshooting information for your DeviceMaster LT. You
may want to 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.
• Troubleshooting Checklist
on Page 111
• General Troubleshooting
on Page 113
• Testing Ports Using Port Monitor (PMon2)
on Page 115
• Testing Ports Using Test Terminal
on Page 118
• Socket Mode Serial Port Testing
on Page 124
• DeviceMaster LT LEDs
on Page 129
• Removing DeviceMaster LT Security Features
on Page 131
• Returning the DeviceMaster LT to Factory Defaults
on Page 133
If you cannot diagnose the problem, you can contact Technical Support
on Page
136.
Troubleshooting Checklist
The following checklist may help you diagnose your problem:
• Verify that you are using the correct types of cables on the correct connecto
rs
and that all cables
are connected securely.
Note: Most customer problems reported to Comtrol Technical Support are
eventually traced to cabling or network problems.
• Verify that the network IP address, subnet mask, and gateway is correct and
appropriate for the network. Make sure that the IP address programmed into
the DeviceMaster LT matches the unique reserved IP configured address
assigned by the system administrator.
- If IP addressing is being used, the system should be able to ping the
De
viceMaster LT.
- If using DHCP, the host system needs
to provide the subnet mask and
gateway.
• Verify that the Ethernet hub and any other
network devices between the
sy
stem and the DeviceMaster LT are powered up and operating.
• Verify that the hardware MAC address in the NS-Link device driver matche
s
the
address on the DeviceMaster LT.
• If using a driver for Windows, verify that you are addressing the port correctly
.
I
n many applications, device names above COM9 require the prefix \\.\ in
order to be recognized. For example, to reference COM20, use \\.\COM20 as the
file or port name.