Timer

This part automatically triggers action source code for the TIMER event at the interval specified by the property interval.

Timer Example

1

Load the editor and place a timer anywhere on the panel layout in the Layout window. Note, however, that the final result will not appear on the teach pendant screen.

2 Changing Timer Properties

The main properties here are active, which controls (and indicates) timer status, and interval, which controls event frequency.

This example uses buttons to enable and disable a timer which alternately switches a pilot lamp on and off.

Load the editor and place a timer, two buttons, and a pilot lamp on the panel layout in the Layout window.

3 Adding Action Source Code

Open the Source Code Edit window, select Timer1 and TIMER, create the action source code skeleton, and add the following line to switch the lamp ON and OFF.

If PL1.state = 1
then PL1.state = 0
Else 
PL1.state = 1
End if

Add the following lines so that the CLICKED events for PB1 ("Start") and PB2 ("Stop") respectively enable and disable the timer.

 Timer1.active = 1

 Timer1.active = 0

Specifying the Timer Interval

To specify the timer interval, change the value of Interval at Property. The unit is ms.

If the timer interval is extremely short, CPU load will be increased. Therefore, please avoid it as much as possible.