Lenze DDS v2.1 Manual de usuario descargar pdf (Pagina 39)

Drive PLC Developer Studio

37DDS DE/EN 2.1

Proceed as follows to reduce the number of free spaces in the car park by one every time.

1. Double click in the function plan editor of the organization unit Counter the variable

bPhotosensor1, to toggle its Boolean value, i.e. the value FALSE→TRUE or

TRUE→FALSE. The variable changed will be inicated in red:

2. Select Online ➞

➞➞

➞Write values, to set all variables changed in the automation system

(highlighted in red) to the new value. The variables changed will no longer be highlighted.

The variable

bPhotosensor1 is now displayed in blue since the value is TRUE. The counting

variable

ParkingLotsCounter is increased by 1 because of the FALSE→TRUE change.

Tip!

The variable ParkingLotsCounter can be reduced by processing the steps described before

with bPhotsensor2 instead of

bPhotosensor1.

Please observe that the inputs

CU/CD of the counter ParkingLotsCounter (IEC1131 standardfunction

CTUD) only react on a change from FALSE to TRUE (0→1).

Please proceed as follows to set the number of places available in the car park to 0 and check whether

the lights change from green to red and the barrier is closed.

1. Double click in the function plan editor of the organization unit Counter the variable

ParkingLotsCounter.CV,toassignanewvalue.

A dialog box will be opened:

2. Enter the value “10” in the input field New value and confirm the entr y with OK. The variable

changed is highligthed in red.

3. Select Online ➞

➞➞

➞Write values, to set all variables changed in the automation system to the new

value. The variables changed will no longer be highlighted.

The variable

bTrafficLightRed is now set to the value TRUE (blue), the variable

bTrafficLightGreen is set to FALSE,i.e.theprogramworkscorrectly.

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Lenze DDS v2.1 Manual de usuario Pagina 39