How do you pulse an IO point from a button?

Thomas J

I want to pulse a specific IO point when a button is pressed. Is there an example available that shows how to do this?

lemster68

Go to the control panel on the pendant.  There you will find programmable keys.  Set up the key you want to use and select pulse and the DO to pulse.

od1

Thomas J said:

I want to pulse a specific IO point when a button is pressed. Is there an example available that shows how to do this?

As you've posted in the AppStudio section, I presume you mean using an AppStudio button, not a flex pendant physical button.

This functionality doesn't appear to have been implemented for the TComponents.Button

It should be!

There should be on option to pulse a DO in "onClick" or toggle it on/off in onPointDown and onPointRelease so that you have a momentary switch operation.
At present we can only use a TComponents.Switch which is not momentary.

The best work around I can suggest is the create a procedure which in turn calls PulseDO

You can then use the "Execute procedure" function in the OnClick behaviour to call that procedure.

EDIT:
I've found that you can create a function in AppStudio ans set the DO in that.
There appears to be pulse functionality but I can't find any documentation on the parameters.
I'm able to set a DO but unsure how to pulse it.

Something like this

async () => {

    API.RWS.SIGNAL.setSignalValue("doFr1ErrorQuit", 1,{activePulse:1,passivePulse:0,pulses:10});          

          }
But this just sets the signal high.  I don't know if activPulse and passivePulse are supposed to be the state, the duration or what?

od1

After finding the documentation I was able to pulse a signal by creating this function in the button "onClick" behavior

API.RWS.SIGNAL.setSignalValue("doMySignal", 1,{mode:"pulse",activePulse:500,passivePulse:100,pulses:2});

setSignalValue(signalName, value, mode:, pulses:, activePulse:, passivePulse:, deviceType, networkType, attr)

Modify signal's value

Parameters:

Name	Type	Description
signalName	string
value	number
mode:	string	value | pulse | invert | toggle | delay
pulses:	number	Number of pulses.Pulses is required if mode is toggle/pulse.
activePulse:	number	Active pulse length, in ms
passivePulse:	number	Passive pulse length, in ms
deviceType	string
networkType	string
attr	*