Need 2nd opinion on Wiring diagram.. proximity - isolation - lpt.

[dazp1976]

Hello fellow members.
Just want to get a 2nd opinion on this wiring diagram below.
12 proximity sensors going into a 12 channel isolation board at 24v.
Then going out of the isolation board at 5v.
Then going from board directly into an input based LPT port of my cnc controller.
Sensors: NPN, NC, operating at 24v.
Isolator board designed for 24v/in & 5v/out.
LPT is port 5 of a UC300eth controller running at 5v.

Diagram:


Yes it would be easier to get a bi-directional bob for it but we're talking about the u.k. here.
You can't get Jack.
(Anyway. The multi isolator boards look neater and are easier to get)

Finally got round to testing this out. Generic off the shelf isolator board 24v npn/pnp input - 5v npn output.
It works perfectly!!!.
Connected 8 proximity sensors to isolator board (24vin). Connnected isolator (5vout) to port #5 inputs 2-9 on uc300eth directly.

Turned it all on and it all worked as it should. Uccnc showed them trigger in diagnostics page when metal detected, and acted correctly when set up as limit switches on port #5.

Generic board, that includes din rail mountings, less than £20!.
Will be using these on ports #4&5 in the future.
https://m.aliexpress.com/item/400038...Adapt=Pc2Msite

Now to get a 5v to 24v to work on the 4 outputs on those input ports.