Specifications

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7. TROUBLESHOOTING
Chapter 7. TROUBLESHOOTING
The following describes the details of the errors that may occur when using the RFID
interface module, and the corresponding troubleshooting methods.
For troubleshooting related to the programmable controller CPU, refer to the user's
manual of the CPU module used.
7.1 Verifying Errors Using LED Displays
The following describes how to verify errors using the LED displays of the RFID
interface module.
For programmable controller CPU and master module related information, refer to the
user's manual of the programmable controller CPU and master module used.
At times, a consistency error of the master module may not occur and L RUN may turn
on even though the parameters of the master station and RFID interface module are
not consistent. For details, refer to the user's manual of the master module used.
(1) When the "PW" LED turns off
Check Item
Description
Is the external power supply turned on?
Check the external power supply. Check if the external
power supply is wired properly.
Is the external power supply voltage within the specified
value range?
Set the voltage value within the range of 20.4 to 26.4V.
Does the rated output current of the external power
supply satisfy the current consumption of the RFID
interface module?
Use current that satisfies the current consumption of the
RFID interface module.
Is there any fault in the antenna or amplifier?
Turn the external power supply OFF, disconnect the
wiring such as the antenna wiring, and turn ON the power
supply once again.
There is no abnormality related to the above check items.
A hardware error may have occurred. Please consult with
your local representative or sales office, explaining a
detailed description of the problem.
(2) When the "RUN" LED turns off
Check Item
Description
Has a watchdog timer error occurred?
Check for occurrence of watchdog time errors using the
link special registers (SW0084 to SW0087) of the master
module, and turn ON the reset switch of the RFID
interface module.
If the "RUN" LED does not turn on after the power supply
was turned ON once again, a hardware error may have
occurred. Please consult with your local representative or
sales office, explaining a detailed description of the
problem.
(3) When the "L RUN" LED turns off
Communication has been disconnected.
For details, refer to the troubleshooting section of the user's manual (advanced) of
the master module used.
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