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Kuhnke Electronics Instruction Manual

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Error Handling<br />

8.3.3 Watchdog (Program Runtime Exceeded, Error<br />

#3)<br />

Cause<br />

� Total program runtime has exceeded the set<br />

watchdog time<br />

Indication<br />

� "failure" LED flashes<br />

� CoDeSys reports communication error<br />

Reaction<br />

� STOP: The program is stopped<br />

� RESET: local outputs and non-buffered markers,<br />

timers and counters are reset<br />

� external outputs (PROFIBUS) off<br />

Corrective action<br />

� Modify the program to shorten the runtime<br />

� Restart the controller:<br />

- Hardware: turn power off and back on,<br />

or<br />

- Software: in CoDeSys, choose,<br />

Reset, then Start<br />

184 E 700 GB

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