Hi, I have a similar need.
I use different models of Unistreams and would like to connect fingerprint scanners in stead of using the screen login.
The finger print scanner I have in mind can either produce a single logic (relay contact, single DI) or 2 x DI to provide 4 levels of security.
Is it possible to manipulate the User Access Control Struct in Ladder based in a combination of digital inputs?