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7-4SectionTroubleshooting Flowcharts
122
The I/O check flowchart is based on the following ladder diagram section.
01003
00002
(LS1)
00003
(LS2)
SOL1 malfunction.
SOL1
01003
Yes
Monitor the ON/OFF
status of IR 01003
with a Programming
Device.
No
Is the
IR 01003 output indicator
operating normally?
Check the voltage at the
IR 01003 terminals.
Wire correctly.
Operation OK? Is output wiring
correct?
Disconnect the external wires
and check the conductivity of
each wire.
No
Yes
Check output device
SOL1.
Operation OK?
Replace the CPU Board
or Expansion I/O Board
with the problem.
Yes
No No
Operation OK?
NoYes
Yes
A
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Malfunction of SOL1
Is the external
power supply shorted
or overloaded?
Yes
No
Correct the short circuit
or limit the connected
load to the specified
range.
I/O Check