General Troubleshooting - Comtrol DeviceMaster AIR User Manual

General Troubleshooting

General Troubleshooting
68 - DeviceMaster AIR User Guide: 2000365 Rev. C
This table illustrates some general troubleshooting tips.
Note: Make sure that you have reviewed the
General Condition
PWR or Status LED
flashing
PWR or Status LED not
lit
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.)
Cannot ping the device
through Ethernet hub
Cannot ping or connect
to the DeviceMaster AIR
Troubleshooting Checklist
Explanation/Action
Indicates that boot program has not downloaded to the
unit.
1. Make sure that you have downloaded the most
current driver from:
http://support.comtrol.com/download.asp.
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 the NS-Link User Guide (Page 8).
4. Remove the NS-Link driver.
Indicates that power has not been applied or there is a
hardware failure. Contact Technical Support.
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.
Isolate the unit from the network. Connect the device
directly to the NIC in the host system (see Page 66).
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 15 seconds to disable the
bootloader with Redboot to get into the setup utility.
Troubleshooting and Technical Support
on Page 66.