Emerson iPro SERIES Instrukcja Użytkownika Pobierz pdf (Strona 63)

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1592025400 – Vers. 1.0 - 63 -

8.3.2 How to create the FB

Starting from the Example No. 1, we can consider to control the following resources:

• Fan motor

• Alarm for high temperature

• Alarm for low temperature

The diagram for each of them is:

Practically we can see that for every diagram we have:

• An analog variable that drives the output

• A bool variable as output

• A specific input value where the output is ON

• A specific input value where the output is OFF

The only difference is the action : DIRECT or INVERSE.

Inverse Action

Direct Action

Inverse Action

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Emerson iPro SERIES Instrukcja Użytkownika Strona 63