Programming
88 © Festo Didactic GmbH & Co. • MPS
If a Start-button is pressed and hold, the Start-light (H1) shall be on after 5,0
seconds and stay on until the button is pressed. The timer is only running while the
Start-button is pressed. If the Start-button will be released before 5 seconds, the
timer start new.
Information
Use FC1 to edit the program. Save the actual Project as a new project named P2_09.
Please use symbol adresses. The programming language for FC1 should be FBD, for
OB1 STL. Use the Hardwarecatalog (Program elements) to edit the program in FBD
(see screens "Open the Hardwarecatalog") and use the help-function to get further
informations (see the screen shots "Help function for an On-Delay-Timer").
Use Timer 1 for this project.
Instructor: Discuss about the different timer-functions and show how to open and
use the help-function in the Hardwarecatalog (Program element).
2.9 Programming –
On-Delay-Timer
function
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