Gateway tag change script to play a sound

Ignition
1

Trying to run a gateway tag change script to play a sound on the gateway only (no client running) at the push of a button on a PLC. The script runs, but the sound doesn’t play, possibly because its running in the background…?

Hopefully this is an easy one.

I’m sure I’ve done something like this before I just can’t find it!

2

Maybe if you modify the Ignition service so it runs as a different user or runs interactively or something?

3

Thanks Kevin, yes I changed the service to interact with the desktop but no good news…

4

What does your script look like currently? Also what version of Ignition.

5

It’s some seriously simple stuff… pretty sure its something to do with windows services not being able to play sounds.

if not initialChange:
	if newValue:
		soundFile = "sound.wav"
		soundPath = "C:\\"
		system.util.playSoundClip("%s%s" % (soundPath, soundFile), 1.0, 1)
		print "i played a sound"
	else:
		print "i didnt play a sound"
6

Just a thought if you aren’t able to get it to play from the gateway context - you could have a client running on the gateway with some specific username/role, then you can send a message from the gateway to that client to play the sound.

7

8.0 beta [these words are for 20 char min]

8

was hoping to not run a client at all for this particular install

9

Might want to post this question in the beta forums, then - that, or test your current solution on a 7.x server installed to confirm if its a beta problem or not.

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