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Testing three variants for feature presence

Thanks for reading,

I'm looking to test the presence of features between three variants of a single part.

The part is a black moulding that has open/closed panels.

I was hoping to use something like a reed switch or mechanical switct, that would then trigger a green/red light for go/no go.

Is this possible? if so, what would I need to enable three variants to be switchable?

0 Votes


April 12, 2019 07:16


This is a bit of a vague question, I think you are asking for a circuit that would allow it to detect a thing and if it sees that then to look for additional features. Certain combinations will give a Go signal (light) or No Go if the combination is incorrect.

I can start to imagine a relay circuit to do this but a neater solution would be a simple logic module e.g. (917-6373).
This would then give you inputs and outputs that can be configured however you wish. This unit has 8 inputs and 4 outputs so would handle all of your sensors for detection and outputs for the different lights. The added benefit is that you could set up counters to count how many items have been tested and even have a communications module to alert you of No Go items

April 12, 2019 07:16

@davecole Thank you, this is exactly what I was looking for...