Comtrol DeviceMaster NS-Link - Manual (Page 75)

DeviceMaster Driver User Guide: 2000595 Rev. A Troubleshooting and Technical Support - 75
NS-Link Driver Troubleshooting
NS-Link Driver Troubleshooting
This table includes some tips related to NS-Link drivers.
NS-Link Condition Explanation/Action
Need to program IP
address into the device.
Before programming an IP address it is critical that the
DeviceMaster be operational and passes the power on tests
when configured for the MAC address.
Note: If the DeviceMaster is NOT operational, do NOT attempt
to program or use an IP address with the DeviceMaster.
See Program the IP Address (Network Information) on Page 11
for more information.
Cannot open port
1. Verify that MAC address in the NS-Link driver matches
the address on the DeviceMaster.
2. Verify that you are using the correct NS-Link driver. If
necessary, remove and reinstall a new driver.
3. Isolate the DeviceMaster from the network (see Page 65).
4. Check to see if another program or computer is active on
this port.
The Comtrol device has a
lower limitation of
network bandwidth
requirement of 64 Kbps.
At this speed the entire available bandwidth is required for the
purpose of uploading the firmware from the driver to the
DeviceMaster. At lower speeds, timing issues will prevent the
firmware from being successfully installed to the
DeviceMaster, thus preventing the DeviceMaster from normal
operation.
When using the DeviceMaster over a WAN link that is less
than the recommended 64 Kbps, a timing modification may be
made that will allow uploading of the firmware.
Load the driver locally to the DeviceMaster for the purpose of
getting the firmware installed. The PC on the other side of the
slow link can then “share” the port. The sharing may be
exclusive as the firmware loader PC may not need to access the
ports.