Mitsubishi Electric MELSEC iQ-R Series User Manual page 164

■Hardware test for LED check
The following explains the LED hardware diagnostic of a module. For the diagnostic, the LED of a module needs to be turned
ON.
The values in the buffer memory cannot be referenced in GX Works3 during the hardware test for LED check.
Operating procedure
1.
Select "Hardware Test for LED Check" in "Basic Settings"  "Various Operations Settings"  "Mode Settings" in the
module parameter of a module in the parameter setting of GX Works3.
2.
Set the CPU module to the STOP state, and write the parameters.
3.
Reset the CPU module.
4.
After the CPU module is reset, the hardware test for LED check is performed automatically.
The following contents are displayed. Check visually whether there is no error.
LED name
RUN
ERR
OPR
CARD RDY
INFO
CARD ACS
5.
When the test is completed normally, select "Online" in "Basic Settings"  "Various Operations Settings"  "Mode
Settings" in the module parameter of the module in the parameter setting of GX Works3, and reset the CPU module.
6.
When the test is completed abnormally, check if measures are taken to reduce noise of the system, and perform the test
again.
If it is completed abnormally again, a hardware failure may occur in the module. Please contact your local Mitsubishi
Electric sales office or representative.
5 TROUBLESHOOTING
162
5.6 Recorder Module
Display color
Green
Red
Green
Green
Green
Green
Display status
ON
ON
ON
ON
ON
ON