General Troubleshooting - Comtrol DeviceMaster MOD Series Hardware Installation And Configuration Manual

General Troubleshooting

DeviceMaster MOD | UP Hardware Installation and Configuration Guide: 2000630 Rev. B
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
flashing
PWR or Status LED not
lit
Cannot ping the device
through Ethernet hub
Cannot ping or connect
to the DeviceMaster
DeviceMaster
continuously reboots
when connected to some
Ethernet switches or
routers
Troubleshooting and Technical Support
Troubleshooting Checklist
Explanation/Action
Indicates that boot program has not downloaded to the
unit.
1. Reboot the system.
2. Make sure that you have downloaded the most
current firmware for your protocol.
Note: If the PWR or Status LED is still flashing,
contact Technical Support.
Indicates that boot program has not downloaded to the
unit.
1. Reboot the system.
2. Make sure that you have downloaded the most
current firmware for your protocol.
Note: If the PWR or Status LED is still flashing,
contact Technical Support.
Indicates that power has not been applied or there is a
hardware failure. Contact Technical Support.
Isolate the DeviceMaster from the network. Connect
the device directly to the NIC in the host system.
The default DeviceMaster 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.
Invalid IP information may also cause the switch or
router to check for a gateway address. Lack of a
gateway address is a common cause.
Troubleshooting and Technical Support - 87
on Page 85.