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OperationStop input

This state-controlled input evaluates the operation stop feedback signal from the standard PLC.

Data type: BOOL
Initial value: FALSE

According to the standard, the restart of the machine/system after the event of an error may only be initiated if all corresponding requirements are met. To achieve this, you are responsible for planning and implementing the startup behavior according to your risk analysis.

The risk analysis may result in two realization versions for the application:

WARNING
Unintended start-up
  • Include in your risk analysis the impact of the reset by means of a constant TRUE value at the OperationStop input.
  • Make certain that appropriate procedures and measures (according to applicable sector standards) have been established to help avoid hazardous situations when resetting.

If the function block is activated (input Activate = TRUE), the possible values at this input lead to the following function block behavior:

ValueDescription
TRUE The system is in operation stop mode. By triggering the reset button, a manual reset function can be executed.
FALSE The system is not in the operation stop mode. A manual reset function can not be executed.