General troubleshooting – Comtrol NS-link Windows NT User Manual
Page 81
Troubleshooting and Technical Support
81
General Troubleshooting
General Troubleshooting
This table illustrates some general troubleshooting tips.
Note: Make sure that you have reviewed the
General Condition
Explanation/Action
PWR or Status LED
flashing
Indicates that boot program has not
downloaded to the unit.
1.
Make sure that you have downloaded the
most current dr
.
2.
Install the driver and configure the device
using the MAC address. Make sure that you
reboot the system.
Note: If the PWR or Status LED is still
flashing, contact Technical Support.
3.
If you want to program an IP address into
the Comtrol device, you can use the
procedure outlined in
4.
Remove the NS-Link driver.
PWR or Status LED not
lit
Indicates that power has not been applied or
there is a hardware failure. Contact Technical
Support.
Can ping the Comtrol
device, but cannot open
the ports from a remote
location.
(You must have
previously programmed
the IP address, subnet
mask, and IP gateway.)
The NS-Link driver uses Port 4606 (11FE h) to
communicate with the Comtrol device.
When using a “sniffer” to track NS-Link
packets, filtering for Port 4606 will easily track
the packet. The packet should also contain the
MAC address of the device and the originating
PC so that it can be determined if the packet is
able to travel the full distance one way or not.
If the 4606 packet is found on one side of a
firewall or router, using sniffer, and not on the
other side, then that port needs to be opened up
to allow the 4606 to pass.
This will most often be seen with firewalls, but
is also seen in some routers.
Cannot ping the device
through Ethernet hub
Isolate the unit from the network. Connect the
device directly to the NIC in the host system
(see Page 81).
Cannot ping or connect
to the DeviceMaster
RTS.
The default IP address is often not accessible
due to the subnet masking from another
network unless 192.168 is used in the network.
In most cases, it will be necessary to program in
an address that conforms to your network.
If you do not use the NS-Link driver to program
the IP address, you only have 10 seconds to
disable the bootloader with Redboot to get into
the setup utility.
See the User Guide (Page 6) for your product for
the Redboot method of programming an IP
address.