Rockwell Automation 1753-IB16XOB8 GuardPLC 16-Digital Inputs and 8-Digital Outputs Installation Instructions - Manual (Page 21)

GuardPLC 16-Digital Inputs and 8-Digital Outputs Module 21
Publication 1753-IN011A-EN-P - October 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 module, is executed.
The module processes input and output signals, carries out communication and
performs hardware and software tests.
Flashing The module 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 module is in ERROR_STOP (see ERROR).
ERROR On • A hardware error has been detected by the module. The module goes to
ERROR_STOP and the execution of the routine is halted. Hardware errors are
errors in the module, 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 module.
• The watchdog has reported an error due to exceeded cycle time.
All system outputs will be reset and the module ceases all hardware and software
tests. The module can only be restarted by a command from the programming
software.
Off No errors are detected.
PROGress On The upload of a new module configuration is in progress.
Flashing The upload of a new operating system into the Flash ROM is in progress.
Off No upload of module configuration or operating system in progress.
FORCE On The module is executing a routine (RUN) and FORCE mode is activated by the user.
Flashing The module is in STOP, but Forcing has been initiated and will be activated when the
module is started.
Off Forcing is OFF.
FAULT On • The routine (logic) has caused an error.
• The module 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.
OSL Flashing Emergency Operating System Loader is active.
BL Flashing Boot Loader unable to load operating system or unable to start COMM operating
system loader.
Module status can be interrogated through the programming software. For more information, refer to the
GuardPLC System User Manual, publication number 1753-UM001.