Rockwell Automation 1756-RIO ControlLogix Remote I/O (RIO) Communication Interface Module Installation Instr - Manual (Page 21)

ControlLogix Remote I/O (RIO) Module 21
Rockwell Automation Publication 1756-IN610B-EN-P - November 2010
OK Status Indicator – Module Health
Interpret the Alphanumeric Display
The remote I/O (RIO) communication interface module displays alphanumeric
messages that provide diagnostic information about your module. The warning
messages appear twice on the display, then the normal display resumes. The table
summarizes the messages.
Indicator Status Description
OK Green Indicates that module has passed all power-up
diagnostics and is functioning normally.
Red Indicates that module start-up diagnostics have
failed or a major module fault, such as watchdog
time-out or jabber inhibit, has occurred.
IMPORTANT If all three status indicators are solid red and the 4-character
display shows M#xx, (where xx is the error number), a fatal
error has occurred. Refer to the 1756-RIO user manual,
publication
1756-UM534 , for information on clearing fatal
errors. Make a note of the error code numbers to give
Technical Support, if you need to call for help.
Alphanumeric Display Message Descriptions
Message Description
RIO Scanner v. x.xx.xx [banner]
RIO Adapter v. x.xx.xx [banner] The module’s firmware revision, displayed at powerup.
The three parts of the revision number are the major
revision, the minor revision, and the build number. This
is followed by the status banner.