Siemens SINUMERIK 810D Programming Guide

10
Motion-Synchronous Action 12.97
10.2 Basic modules for conditions and actions
10
840 D
NCU 571
840D
NCU 572
NCU 573
FM-NC 810D 840Di

Siemens AG 2000. All rights reserved
10-350
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
10.2 Basic modules for conditions and actions
Real-time variables
Real-time variables are evaluated and written in the
interpolation cycle.
The real-time variables are
•
$A… , main run variable,
•
$V... , servo variable.
To identify them specially, these variables can be
programmed with
$$
:
$AA_IM[X] is equivalent to $$AA_IM[X].
Setting and machine data must be identified with $$
when evaluation/assignment takes place in the
interpolation cycle.
A list of variables is given in the Appendix.
Calculations in real time
Calculations in real time are restricted to the data types
INT, REAL and BOOL.
Real-time expressions are calculations that can be
executed in interpolation cycles that can be used in
the condition and the action for assignment to NC
addresses and variables.
•
Comparisons
In conditions, variables or partial expressions of
the same data type can be compared. The result
is always of data type BOOL.
All the usual comparison operators are
permissible (==, <>, <, >, <=, >=).
•
Boolean operators
Variables, constants and comparisons can be
gated using the usual Boolean operators (NOT,
AND, OR, XOR)

Siemens SINUMERIK 810D Specifications

General

Brand	Siemens
Model	SINUMERIK 810D
Category	Control Unit
Language	English