Lenze DDS v2.3 Uživatelský manuál stáhnout pdf (Strana 29)

100

101

Drive PLC Developer Studio

Program example

3-7

l DDS EN 2.3

Pulse encoder TP

The pulse encoder TP has two inputs ( IN, PT) and two outputs ( Q, ET).

• If at the input IN TRUE is applied, the output Q ,forthetimePT (in milliseconds) will return the

value TRUE.

• ET outputs the time already expired in milliseconds.

Input variable Status Output variables Status/value

IN FALSE

Q FALSE

ET 0

IN TRUE

Q TRUE

(ET < PT)

ET 0 ì PT*

Q FALSE

(ET = PT)

ET PT

* The output ET counts the time in milliseconds.

To use the pulse encoder TP in the organization unit WAIT we must create a local instance of TP

28.Use the declaration editor to declare as local variable (between the keywords VAR and

END_VAR) a variable named DELAY of type TP.

3.2.6.2 Instruction list

To implement the timer, the instruction list for the organization unit WAIT must be as follows:

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