Comtrol NS-link Windows NT User Manual

Page 80

Troubleshooting and Technical Support

Troubleshooting Checklist

•

Reset the power on the Comtrol device 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 unit 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 Comtrol device.

•

Verify that the network IP address is correct. If IP addressing is being used,
the system should be able to ping the Comtrol device.

•

Verify that the IP address programmed into the Comtrol device matches the
unique reserved IP configured address assigned by the system administrator.

•

If using a driver for Microsoft systems, verify that you are addressing the port
correctly. In 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.

•

If using NS-Link for a Microsoft system, you can use one of the tools bundled
with the drivers:

Test Terminal program (wcom32.exe), which can be used to troubleshoot
communications on a port-by-port basis (

Using Test Terminal

on Page 69).

Port Monitor program (portmon.exe), which checks for errors, modem
control, and status signals (

Using Port Monitor

on Page 71). In addition, it

provides you with raw byte input and output counts.

Device Advisor, which helps identify problems is a tab in the Device
window of the driver (

Using the Advisor

on Page 58).