Mitsubishi Electric MELSEC iQ-R Series User Manual page 744

FUNCTION LED
The FUNCTION LED indication follows the priority order shown below.
Priority Description
High When program restoration information is not written, when the external input/output forced on/off
function is executed (in registration), when the device tests with execution conditions are registered
Low Functions set in "Function to use FUNCTION LED" of "LED Display Setting" (such as the data
logging function)
When program restoration information is not written, the operating status of other functions cannot be checked with the
FUNCTION LED indication only. However, the operating status of the above functions can be checked with the FUNCTION
LED by changing the LED control setting for program restoration information write status.
■Procedures for disabling the FUNCTION LED flashing
The following describes the procedures for disabling the FUNCTION LED flashing when program restoration information is
not written.
When using the Process CPU (redundant mode), perform the above procedure for both systems.
APPX
742
Appendix 10 Program Restoration Information Write Selection
1.
Check that SM386 (Program restoration information write status LED control setting
mode) is off (LED flashing).
2.
Set "AFAFH" to SD384 (System operation setting).
3.
Turn off and on SM384 (System operation setting request). SM384 is automatically turned
off. If writing has failed, SM385 (System operation setting error) is turned on and an error
is stored in SD385 (System operation setting error cause).
4.
Check that SM385 is off, and turn off or reset the CPU module.
5.
The FUNCTION LED turns off and SM386 turns on (without LED flashing). b1 of SD1488
(Debug function usage status) is turned off.
When other functions relating to the FUNCTION LED indication are used, the LED indication
follows the execution status.
Remarks
Same priority
Page 206 LED display setting