11 Troubleshooting
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101
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11 Troubleshooting
This section covers how to handle problems that may arise during motor operation and sequence
program execution.
11.1 When the ALARM LED illuminates
When an alarm is generated, the ALM output turns on and the ALARM LED on the controller
illuminates. If an alarm is generated, check the error message displayed on the PC HyperTerminal. Refer
to section 11.2 “Error messages” on p.103, and respond accordingly.
ALARM LED
turns on
PC is connected.
ALARM LED turns off.
Connect PC and start
HyperTerminal.
Execute the sequence program
that generated the error.
YES
NO
OK
NG
See section “Main causes of an alarm” on p.102, to clear the cause of the alarm.
Refer to section 11.2 “Error messages” on p.103.
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