Mitsubishi Electric MELSEC FX2N-2LC User Manual page 98

FX2N-2LC Temperature Control Block
Other causes of errors
In addition to the flags and the events, the following situation may be realized.
1) The FX -2LC does not operate with the set values written by TO instructions.
2N
- Check whether or not the FX
(Check the connector positions and the connection status.)
- Check whether or not the unit No. and the BFM Nos. are correctly specified in FROM/TO
instructions.
2) The POWER LED is not lit.
- Check whether or not the FX
(Check the connector positions and the connection status.)
- Check whether or not the used capacity of the service power supply of the PLC main unit
exceeds the allowable range.
-2LC is correctly connected to the PLC.
2N
-2LC is correctly connected to the PLC.
2N
Diagnostic 9
9-2