Proximity sensor question

motal2004 wrote:

How would one go about that way, I do have 5v proximity sensors. Thanks again for the help

Yes it can be done but you are then down grading the system. 12-24 Volts is much better with noise isolation than 5V.

I would say that most proxy sensors generally will work from 5-36v.

What type of machine are you fitting these on?

The wiring would be done the same way as what was described. The 7i96 also has a few +5vp pins to use for powering items and these are short circuit protected. But as clive says, the 24v is better for noise issues.

Wiring something like this for 5v:

TB2 24 to common pin TB3 12

Blue -> TB2 pin 24
Brown -> TB2 pin 20
Black -> TB3 input 1

If you do choose 5v then all other inputs will also need to be run off the same source. This may limit what you can do with them.

Cool , thanks for the helpful information and It’s for a plasma Cnc table,

motal2004 wrote:

Cool , thanks for the helpful information and It’s for a plasma Cnc table,

Then I would definitely go for 24V. You won't need much current

I use these with 7i77 and 7i76. No interface, no relays connects directly to mesa board and work great.

www.amazon.ca/Twidec-Inductive-Proximity...dExvZ0NsaWNrPXRydWU=

It’s not working.
Common from meanwell ps to tb3 .
Brown to v+ on ps
Black to input 1
The 7i96 board input 1 indicator light , lights up very bright when I connect light above But axis keeps on moving,
Is there a way to reverse the logic in the files?
I don’t want to order new proximity sensors

Is it a 3 wire sensor? Where is the blue wire going?

Did you setup the hal file to read the input? If you need to invert the reading then add a -not to the end of the input statement in hal file for that particular input.

Confirm the wiring configuration for the sensors. The example I used is the common setup but your maybe different.

Bench test the sensor. Hook it up the ps and check the output leg vs ground. Should go to 24v when you manually trigger the sensor by passing an item in front of it.

What type of sensor is it and what is the sensing range and type?

3 wire set up,
Blue -> common on power supply
Brown -> v+ Power supply
Black -> tb3 input 1

i did a bench test on all sensors before and after installation the indicator light on the sensor goes on & off when sliding metal object.
I will try the invert hal edit first
current is "net min-home-x <= hm2_7i96.0.gpio.000.in"
is it as simple as "net min-home-x <= hm2_7i96.0.gpio.000.in-not" ?

It should be that easy. A good way to check is to open up halmeter and see the pins that are available. Each input typically has an inverted pin ...-not
You can also select the pin to watch it turn true/false and make sure it's functioning before risking movement.
Do you have a source that can confirm the wire colors and their functions? There is a chance that the blue and black are inverted.

not a 7i96 but I cover prox wiring here