Apply chassis power, Alphanumeric display – Rockwell Automation 1747-SCNR SLC ControlNet Scanner Module Installation Instructions User Manual
Page 13
 
SLC ControlNet Scanner Module 13
Publication 1747-IN059C-EN-P - September 2001
Apply Chassis Power
When you apply chassis power, the module address and status 
display cycles through the following displays:
1. POST - The 1747-SCNR runs Power On Self Test.
2. 1111, 2222, etc. - The 1747-SCNR is executing its startup
sequence.
3. The 1747-SCNR firmware version is displayed temporarily after
startup.
4. A#nn (where nn = ControlNet node address) then I/O or
I/OX (based on the number of connections configured and 
established) then IDLE or RUN (based on the scanner mode).
Alphanumeric Display
The four character alphanumeric display provides you with 
additional visual information about the current operating status of 
the module.
The following tables describes problems that may occur while using 
your 1747-SCNR, the probable causes, and the recommended action.
Node Address and 
Status Display
30750-M