Interpret the led status indicators, Module status (ms) indicator – Rockwell Automation 1788-ENBT EtherNet/IP Daughtercard Installation Instructions User Manual
Page 7
 
EtherNet/IP Daughtercard 7
Publication 1788-IN054A-EN-P - September 2002
Interpret the LED Status Indicators
The four status indicators on the daughtercard provide information about the 
network, the daughtercard, and its connections.
The following tables outline the possible states, explain what each state means, and 
indicate what action you should take, if any, to correct that state.
Module Status (MS) Indicator
This LED indicates whether or not the daughtercard has power and is operating 
properly. 
Condition
Status
Indicates
Recommended Action
off
no power
The daughtercard does not 
have power.
Check the host power supply.
Verify that the daughtercard is firmly 
seated in the host’s slot.
Replace daughtercard and/or host.
flashing 
green
standby
The daughtercard does not 
have an IP address and is 
operating in BOOTP mode.
Verify that the BOOTP server is running.
green OK
The
daughtercard
is
operating correctly.
Normal operation. No action required.
red
held in reset
The host is holding the 
daughtercard in reset or 
the host is faulted.
Verify that the daughtercard is firmly 
seated in the host’s slot.
Clear the host’s fault.
Replace daughtercard and/or host.
self-test
The daughtercard is 
performing its power-up 
self-test.
Normal operation during powerup.
major fault
An unrecoverable fault has 
occurred.
Cycle power to the host.
Replace the daughtercard and/or host.
flashing red
updating firmware
The daughtercard firmware 
is being updated.
Normal operation during firmware 
update. No action required.