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8
TROUBLESHOOTING
This chapter describes the details of errors that can occur in the RFID interface module and troubleshooting.
The RFID interface module is available for the online module change. When an error occurs, the RFID
interface module is changed without stopping the programmable controller system. (The online module
change from ER-1V680D1 to ER-1V680D2 or from ER-1V680D2 to ER-1V680D1 is not available.)
For the replacement procedure and the CPU modules available for the online module change, refer to the
following.
MELSEC iQ-R Online Module Change Manual
8.1
Check with LED
Checking the LED indicator status is the primary diagnostics without an engineering tool, resulting narrowing the scope of the
error cause.
The status of RFID interface module is checked with RUN LED, ERR LED, EXT PW LED, and A ER LED. The following tables
lists the LEDs and the status of RFID interface module.
LED
LED status
RUN LED
On
Blinking
Off
ERR LED
On
Off
EXT PW LED
On
Off
A ER LED
On
Blinking
Off
Description
Normal operation
When selecting the target module for online module change
Power-off
Error
Module replacement status at the time of online module change
Error
Normal operation
Normal operation
Error (error of power supply to antenna)
Error
Error at the time of the communication test under TEST mode
Normal operation
Reference
MELSEC iQ-R Online Module Change Manual
Page 111 When the RUN LED turns off
MELSEC iQ-R Online Module Change Manual
Page 111 When the ERR LED turns on
Page 111 When the EXT PW LED turns off
Page 112 When the A ER LED turns on or blinks
Page 79 Communication test
8 TROUBLESHOOTING
8.1 Check with LED
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Table of Contents
Troubleshooting
