Siemens SINUMERIK Series

A4: Digital and analog NCK I/Os for SINUMERIK 840D sl
1.2 Access via PLC
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
37
1.2.4 NCK analog I/Os
1.2.4.1 NCK analog inputs
Function
The value of the analog NCK input [<n>] can be accessed directly in the part program using
system variable $A_INA[<n>].
The analog value at the hardware input can be controlled from the PLC user program.
Applications
The analog NCK inputs are used particularly for grinding and laser machines, e.g. for the
"analog calipers" NC function.
Signal flow
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