Good to see you are still hanging around!
I have made a google search:
"acquisition of inputs" 35,900 results, among which a rather proportion
of texts written by non native speakers.
"inputs acquisition" 1,340 results
"inputs reading" 8,710 results, many false positives (inputs, reading)
"reading of inputs" 26,400 results
"Programmable-logic controllers execute a scanning algorithm that
loops between a reading of inputs (usually contacts on I/O modules)
and putting outputs into a state dictated by the sensed inputs.
http://machinedesign.com/article/machine-control-beyond-plcs-0713"
The process repeats indefinitely.
"scanning of inputs" 3,820 results
Using Ethernet for Industrial I/O and Data Acquisition
David Potter
National Instruments Corporation
"The use of remote I/O, however, requires a communications
link between the control processor and I/O. For reliable
control, this communications link must provide deterministic
sampling or scanning of inputs."
I would say that expressions favoured by native speakers
are:
"Reading of inputs"
"Scannig of inputs"