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Function library

Function blocks

3.5.31 Delay elements (DIGDEL)

3−183

EDSVS9332P−EXT DE 2.0

3.5.31.1 On−delay

If the on−delay is set, a signal change from LOW to HIGH at the input DIGDELx−IN is passed on to

the DIGDELx−OUT output after the delay time set under C0721 or C0726 has elapsed.

DIGDEL1−IN

DIGDEL1−OUT

C0721 C0721

Fig. 3−132 On−delay (DIGDEL1)

In this function, the time element operates like a retriggerable monoflop:

l A LOW−HIGH edge at the input DIGDELx−IN starts the time element.

l If the delay time set under C0721 or C0726 has elapsed, the output DIGDELx−OUT is set to

HIGH.

l The time element is reset and the output DIGDELx−OUT is set to LOW with a HIGH−LOW edge

at the input DIGDELx−IN.

3.5.31.2 Off−delay

An off−delay causes a signal change from HIGH to LOW at the input DIGDELx−IN to be passed on

to the output DIGDELx−OUT after the delay time set under C0721 or C0726 has elapsed.

DIGDEL1−IN

DIGDEL1−OUT

C0721 C0721

Fig. 3−133 Off−delay (DIGDEL1)

A LOW−HIGH edge at the input DIGDELx−IN causes the output DIGDELx−OUT to be set to

HIGH and the time element to be reset.

l The time element is started with a HIGH−LOW edge at the input DIGDELx−IN.

l After the delay time set under C0721 or C0726 has elapsed, the output DIGDELx−OUT is set to

LOW.

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