Table 1 interpreting module and i/o status – Rockwell Automation 1788-CNCR ControlNet Daughtercard Installation Instructions User Manual
Page 15
 
ControlNet Daughtercard 15
Publication 1788-IN002C-EN-P - April 2004
Table 1 Interpreting Module and I/O Status
Indicator
Color
Probable Cause(s)
Recommended Action
Module 
Status (MS)
Off
• No power
• Host is faulted
• Host is holding
daughtercard 
in reset
• Check the power supply.
• Ensure that the daughtercard is firmly seated in the
slot.
• Cycle power. If the indicator remains off, replace the
daughtercard or the host.
Steady 
Red
Major fault
There is a hardware fault with the module. Cycle power.
If the problem persists, replace the daughtercard.
Flashing 
Red
• Minor fault
• Firmware
update in 
progress
• Node address
switch change
• Invalid module
firmware
• Duplicate node
address
• No action required (firmware update in progress.)
• The daughtercard’s node address switches may have
been changed since power-up. Change the node 
address switches back to the original setting. The 
module will continue to operate properly.
• Update module firmware with ControlFlash Update
utility.
• The daughtercard’s node address duplicates that of
another device. Remove power, change the node 
address to a unique setting, then apply power.
Flashing 
Green
No connections 
established
No action required.
Steady 
Green
Connections 
established
No action required.
Flashing 
Red/Green
Self-test
The module is performing self-diagnostics. Wait briefly to 
see if problem corrects itself.If problem persists, check the 
host. If the daughtercard cannot communicate with the 
host, it may remain in self-test mode.
I/O Status 
(I/O)
Always 
Off
This LED is on during the LED portion of the self-tests.