Add OSD text when camera alarm input is triggered

DEADBEEF

n3wb
Apr 4, 2016
11
3
I have a door with a magnet sensor thingy connected to one of my camera's Alarm IOs.
I'd like BI to add some OSD text to that camera's video feed when the camera's IO is triggered by that sensor.

I've added the text overlay and set it to only display when a DIO bit is set.

How do I cause the camera's IO alarm input to set that DIO bit as required? (and remain set while the camera's alarm trigger is active)


BI's help file is usually very comprehensive but isn't very clear on this.