Additional signal sequence diagrams

Please note that temporary intermediate states are not illustrated in the signal sequence diagrams. Only typical input signal combinations are illustrated in these diagrams. Other signal combinations are possible.

The most significant areas within the signal sequence diagrams are highlighted in color.

Weitere Infos
Please refer also to the diagrams found in the overview for this function block.

Manual reset function with duration monitoring of the request signal

Assumptions:

Activate = TRUE: function block is activated.
OperationStop = TRUE: the system is in operation stop mode. Thus ResetPossible = TRUE, i.e., the reset request by the operator is possible.
RisingEdge = FALSE: parameterization for the evaluation of the falling edge according to EN ISO 13849-1.
EdgeMonitoring = TRUE: parameterization for the duration monitoring of the request signal.

1 The activated function block detects no error after the initialization.

2 The operator triggers the control device for the manual reset request (ResetIn input = TRUE).
The timers for the minimum and maximum duration of the request signal (MinEdgeTime and MaxEdgeTime inputs) are started in order to be able to monitor the falling edge.

3 The operator releases the control device for the manual reset request (falling edge at the ResetIn input).
Diagram A: if the falling edge of the request signal at the ResetIn input occurs within the time slot set by the MinEdgeTime and MaxEdgeTime inputs, ResetOut outputs the reset signal (TRUE pulse with a length of one cycle of the Sicherheitssteuerung).
Diagram B: if the falling edge of the request signal at the ResetIn input occurs before the elapse of the MinEdgeTime time, no reset signal is applied to the ResetOut output and the function block detects an error (Error output = TRUE); refer also to function block behavior in the event of errors.
Diagram C: if the falling edge of the request signal at the ResetIn input occurs after the elapse of the MaxEdgeTime time, no reset signal is applied to the ResetOut output and the function block detects an error (Error output = TRUE); refer also to function block behavior in the event of errors.