Mitsubishi Electric MELSEC iQ-R AnyWireASLINK User Manual page 76

When the ALM LED is flashing at 1 second intervals
When the ALM LED is flashing at 1 second intervals, check the following.
Check item
Does a programmable controller error occur in the buffer memory?
Is any transmission cable (between DP and DN, between 24V and DP, or
between 0V and DP) short-circuited?
Is the terminal block properly wired?
Is the current consumption of the AnyWireASLINK system within the specified
range?
When the ALM LED is on
When the ALM LED is on, check the following.
Check item
Does a programmable controller error occur in the buffer memory?
Is any transmission cable (DP, DN) disconnected?
Is the terminal block properly wired?
Has the automatic address detection been executed?
Is the slave module operating properly?
Does an AnyWireASLINK version compatibility inspection error exist?
Does a Backup/Restore unsupported error exist?
When the SET LED turns on and does not turn off
When the SET LED turns on and does not turn off, check the following.
Check item
Was the power turned off during automatic address detection?
4 TROUBLESHOOTING
74
4.1 Checking with LED
Action
Check the error with the buffer memory and correct the error. ( Page 76
Checking with the buffer memory)
• Check that the transmission cables (between DP and DN, between 24V and
DP, or between 0V and DP) are not short-circuited.
• When crimping the link connector, check that the pin layout is correct.
Check that the transmission cables (DP, DN) are not in contact with each other
and that there is no incorrect wiring in the terminal block wiring of the
RJ51AW12AL and the slave module.
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)
Action
Check the error with the buffer memory and correct the error. ( Page 76
Checking with the buffer memory)
• Check that the transmission cables (DP, DN) are free from disconnection.
• Check that the cables are crimped with proper pin layout using link
connectors appropriate to the wire diameter.
• Check that the transmission cables (DP, DN) and power cables (24V, 0V)
are properly connected to the terminal block of the RJ51AW12AL.
• Check that there is no incorrect wiring and that screws are tightened
sufficiently.
When creating a new system, adding or removing a slave module, or
changing the address of the slave module, execute the automatic address
detection. ( Page 58 Automatic Address Detection Function)
After executing the automatic address detection function, check that the
number of slave modules and the address are consistent with those of the
actual system.
When the LINK LED of the slave module does not flash, check that there is no
disconnection, short circuit, incorrect wiring, or poor contact in the
transmission cables (DP, DN) around the module.
For measures to be taken, refer to the following.
Page 79 When the AnyWireASLINK version compatibility inspection
cannot be executed
For measures to be taken, refer to the following.
Page 79 When the backup/restoring function is not available
Action
Execute automatic address detection again.
Executing automatic address detection will recover corrupted data in the
EEPROM.