3. CREATING A PLC PROGRAM
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3.5 Reset Action When an Error Occurs
The CODESYS runtime environment stops executing a program when exceptions such as a
watchdog timer timeout error are detected. You can reset these exceptions with a reset action.
Reset actions include three types of resets: warm up reset, cold reset, and reset (PLC
initialization).
For details about each reset action, refer to the following topic in the online help.
• CODESYS Development System > Reference, User Interface > Commands > ‘Online’
For information about the behavior of remanent variables at each reset action, refer to the
following topic in the online help.
• CODESYS Development System > Reference, Programming > Variable Types and special
Variables > Remanent Variables - RETAIN, PERSISTENT “Overview table for the
behavior with RETAIN and PERSISTENT declared variables”
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