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PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke

PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke

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PLC error and failure handling<br />

4.10.4. Checksum in user program (failure #8)<br />

During program generation, a checksum (CS) is generated<br />

over the entire user program memory according to a certain<br />

algorithm.<br />

Cause<br />

Reaction<br />

Notificatoin<br />

Remedy<br />

When starting the controller, the monitor re-calculates the<br />

checksum and compares it to the stored value. If the result<br />

is inequal, the monitor recognises a failure.<br />

-- the controller will not start<br />

-- error byte "ERR00.00" will be set to 8<br />

-- find and remove the cause of the failure<br />

-- use the Transmit command of the KUBES PLC menu to<br />

tansmit the project again to the controller<br />

4 - 74

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