Siemens SINUMERIK Series Function Manual

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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Siemens SINUMERIK Series Specifications

General

Axes Control	Up to 31 axes
Category	Control Unit
Manufacturer	Siemens
Series	SINUMERIK
Control Type	CNC
Communication Interfaces	Ethernet, USB
Operating Temperature	0°C to 45°C
Protection Class	IP20
Power Supply	24V DC
Display	Color TFT LCD