Rockwell Automation 1753-IF8XOF4 GuardPLC 1753-IF8XOF4 Analog I/O Module - Manual (Page 15)

GuardPLC 1753-IF8XOF4 Analog I/O Module 15
Publication 1753-IN013A-EN-P - September 2005
Troubleshoot with LED Indicators
Indicator State Condition
24V dc On 24V dc operating voltage present.
Off No operating voltage.
RUN On This is the normal status of the module.
A routine, which has been loaded into the controller, is executed.
The controller processes input and output signals, carries out communication, and
performs hardware and software tests.
Flashing The controller is in STOP mode and is not executing a routine.
All system outputs are reset.
STOP mode can be triggered by setting the Emergency stop system variable to TRUE
in the routine, or by direct command from the programming software.
Off The controller is in ERROR_STOP (see ERROR).
ERROR On • A hardware error has been detected by the controller. The controller goes
to ERROR_STOP and the execution of the routine is halted. Hardware
errors are errors in the controller, errors in one or more of the digital input
and output modules, or errors in the counters.
• A software error in the operating system has been detected by the
controller.
• The watchdog has reported an error due to exceeded cycle time.
All system outputs will be reset and the controller ceases all hardware and software
tests. The controller can only be restarted by a command from the programming
software.
Off No errors are detected.
PROGress On The upload of a new controller configuration is in progress.
Flashing The upload of a new operating system into the Flash ROM is in progress.
Off No upload of controller configuration or operating system in progress.
FORCE On The controller is executing a routine (RUN) and FORCE mode is activated by the user.
Flashing The controller is in STOP, but Forcing has been initiated and will be activated when
the controller is started.
Off Forcing is OFF.
FAULT On • The routine (logic) has caused an error.
• The controller configuration is faulty.
• The upload of a new operating system was not successful and the
operating system is corrupted.
Flashing An error has occurred during a Flash ROM write cycle.
One or more I/O errors have occurred.
Off None of the above errors has occurred.