Parameter Declaration Type Memory block DescriptionIN INPUT BOOL I, Q, M, D, L,constantStart inputPT INPUT TIME I, Q, M, D, L,constantTime delayQ OUTPUT BOOL I, Q, M, D, L Status of timeET OUTPUT TIME I, Q, M, D, L Expired timeStart input:The time delay is started by a rising edge at input IN. Output Q also produces a risingedge when time delay PT has expired.Time delay:Time delay applied to the rising edge at input IN to PT must be. The range of values isdefined by the data type TIME.Output Q:The time delay is started by a rising edge at input IN. Output Q also produces a risingedge when time delay PT has expired and it remains set until the level applied to input INchanges back to 0. If input IN changes to 0 before time delay PT has expired then outputQ remains at "0".Expired time:Output ET is set to the time duration that has expired since the most recent rising edgehas been applied to input IN. The highest value that output ET can contain is the value ofinput PT. Output ET is reset when input IN changes to "0".14.2.6 SFB 5 - TOF - Create turn-off delaySFB 5 can be used to delay a falling edge by period PT. Here you have the followingcharacteristics:n The timer runs only in the STARTUP and RUN modes.n A rising edge at the IN input causes a rising edge at output Q. A falling edge at the INinput causes a falling edge at output Q delayed by the time PT. If the IN inputchanges back to "1" before the time PT has expired, output Q remains set to "1".n The ET output provides the time that has elapsed since the last falling edge at the INinput. Its maximum value is, however the value of the PT input. ET is reset when theIN input changes to "1".n When it is necessary that the instances of this SFB are initialized after a restart, thenthe respective instances must be initialized in OB 100 with PT = 0 ms.ParametersINPTQETDescriptionVIPA SPEED7 Integrated StandardSystem Function Blocks > SFB 5 - TOF - Create turn-off delayHB00 | OPL_SP7 | Operation list | en | 18-30 735
