Troubleshooting Flowcharts | Section | |
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No
Are the IR 00002 and IR 00003 input indi-
A cators operating normally?
From
previousYes page
Check the voltage at
the IR 00002 and IR
00003 terminals.
No
Operation
O.K.?
Yes
No Yes
Check operation by using a dummy input signal to turn the
input ON and OFF.
Check the voltage at the IR 00002 and IR
00003 terminals.
Operation
O.K.?
No
Is input wiring
correct?
No
Wire correctly.
Are the terminal
screws loose?
Yes
No
Yes
Tighten the terminal
screws
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| Operation | ||
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| O.K.? | |
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| Yes |
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Replace the CPU |
| Check input devices | |||
Unit or Expansion |
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| LS1 and LS2. | ||||
I/O Unit. |
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| Replace the CPU | |
Return to “start.” | |||
Unit or Expansion | |||
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| I/O Unit. | |
