Electrically you need a way to get this signal on a pin.
Past that, it well within the capabilities of the HAL to code up that
this pin reading "TRUE" is a condition for running. It will not matter
if "TRUE" is high or low.
The HAL can be used to integrate this signal, in like a dozen different
ways. It will only require like <5 lines.
Danny
On 7/29/2017 3:30 PM, Tomaz T. wrote:
Some more explanation
pressure switch is a simple NO switch which is triggered at certain pressure
(5.5bar in my case) and that is minimum I need to operate my machine (Z-axis
counter weight cylinder). So every time I want to use my machine I (manually)
have to open valve for air.
I doesn't need to stop (or pause) machine if pressure drops, as my air compressor is
always on "stand by".
So this should be one of conditions needed to power up machine and start homing
axes.
I don't like the idea to wire it in same circuit as e-stop, I think it would be
nice to receive warning for this specific error, if it is possible?
Two important questions:
1. Do you want the machine to pause if you lose pressure mid-run?
(almost certainly so)
2. Do you want the machine to be able to auto-resume if pressure drops
but comes back?
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