11 TROUBLESHOOTING
11.2.3 Flowchart for when the "MODE" LED is flickering
The following shows the flowchart to be followed when the "MODE" LED of the CPU module flickers at PLC
"MODE" LED is flickering
Did you make forced | YES |
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| Cancel forced ON/OFF. |
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ON/OFF setting? |
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| NO | NO |
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| Is the "MODE" LED turned on? | ||||||||
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Is the RESET/L.CLR | RESET position |
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| Move the RESET/L.CLR switch to the |
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switch of the CPU module in |
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the neutral position? |
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| neutral position. |
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| Neutral position | NO |
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| Is the "MODE" LED turned on? | ||||||||
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Hardware fault
Check operations in the order
starting from the minimum system.Completion If the module will not work,
please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.
11 - 4 | 11 - 4 |