Chapter 4 Troubleshooting; Checking With Led - Mitsubishi Electric MELSEC iQ-R AnyWireASLINK User Manual

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TROUBLESHOOTING
This chapter describes the troubleshooting of the RJ51AW12AL.
4.1

Checking with LED

This section describes troubleshooting using LED.
When the RUN LED turns off
When the RUN LED turns off after powering on the RJ51AW12AL, check the following.
Check item
Is the RJ51AW12AL mounted correctly?
When the ERR LED turns on or flashes
When the ERR LED turns on or flashes, check the following.
Check item
Does any error occur in the module diagnostics?
Was the power turned off during automatic address detection?
Is the word data points setting value within the setting range?
When the LINK LED turns on or off
When the LINK LED turns on or off, check the following.
Check item
Does a programmable controller error occur in the engineering tool?
Is the AnyWireASLINK version compatibility inspection in progress?
When the ALM LED is flashing at 0.2 second intervals
When the ALM LED is flashing at 0.2 second intervals, check the following.
Check item
Does a programmable controller error occur in the buffer memory?
Is the power supply voltage of the 24VDC external power supply within the
rated value?
Is any power cable short-circuited?
Is the terminal block properly wired?
Is the current consumption of the AnyWireASLINK system within the specified
range?
Action
Securely mount the RJ51AW12AL on the base unit.
Action
Take the actions displayed on the window.
Execute automatic address detection again.
Executing automatic address detection will recover corrupted data in the
EEPROM.
Set the number of word data points within the setting range.
Action
Check the error with the engineering tool and correct the error.
Wait for the AnyWireASLINK version compatibility inspection to complete.
Action
Check the error with the buffer memory and correct the error. ( Page 76
Checking with the buffer memory)
Adjust the power supply voltage of the 24VDC external power supply within
the rated value (21.6 to 27.6VDC). (The recommended voltage is 26.4VDC.)
• Check that the power cables (24V, 0V) are not disconnected or short-
circuited.
• When crimping the link connector, check that the pin layout is correct.
• Check that the 24VDC external power supply is properly connected to the
terminal blocks of the RJ51AW12AL and the slave module.
• Check that there is no short circuit or incorrect wiring and screws are
tightened sufficiently.
Correct the cables (wire diameter, total wiring length) and modules (type, the
number of connected modules) so that the current consumption of all the
slave modules does not exceed the transmission cable supply current of the
RJ51AW12AL.  MELSEC iQ-R AnyWireASLINK Master Module User's
Manual (Startup)
4 TROUBLESHOOTING
4.1 Checking with LED
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