Comtrol UP DeviceMaster Quick Start - Manual (Page 34)

34 - Troubleshooting and Technical Support DeviceMaster UP EtherNet/IP Quick Start: 2000478 Rev. D
Troubleshooting and Technical Support
General Troubleshooting
This table illustrates some general troubleshooting tips.
Note: Make sure that you have reviewed the Troubleshooting Checklist on Page 33.
General Condition Explanation/Action
PWR or Status LED
flashing
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:
ftp://ftp.comtrol.com/html/up_main.htm .
Note: If the PWR or Status LED is still flashing, contact
Technical Support.
PWR or Status LED not lit
Indicates that power has not been applied or there is a hardware
failure. Contact Technical Support.
Cannot ping the device
through Ethernet hub Isolate the DeviceMaster UP from the network. Connect the
device directly to the NIC in the host system (see Page 33).
Cannot ping or connect to
the DeviceMaster UP
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.
DeviceMaster UP
continuously reboots
when connected to some
Ethernet switches or
routers
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.