Mitsubishi Electric MELSEC FX2NC-16MT-D/UL

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Contents.FX2NC Series Programmable Controllers

7. Diagnostics..........................................................................................7-1

7.1 Preliminary checks........................................................................................... 7-1

7.2 Basic diagnostics ............................................................................................. 7-2

7.2.1 BATT LED ON..................................................................................................... 7-2

7.2.2 ERROR LED flashes (PROGRAM ERROR) ....................................................... 7-2

7.2.3 ERROR LED ON (CPU ERROR) ........................................................................ 7-3

7.3 Common errors ................................................................................................ 7-4

7.4 Replacing the battery ....................................................................................... 7-4

7.5 Maintenance .................................................................................................... 7-5

7.6 Error flags ON indicates error. ......................................................................... 7-6

7.7 Error registers ..................................................................................................7-8

7.8 Error codes .................................................................................................... 7-10

7.9 Instruction list ................................................................................................. 7-11

8. Discontinued model.............................................................................8-1

Mitsubishi Electric MELSEC FX2NC-16MT-D/UL - Page 10