Siemens SINUMERIK 840D Programming Guide

1
Flexible NC Programming 04.00
1.4 Indirect
p
ro
g
rammin
g
1
840D
NCU 571
840D
NCU 572
NCU 573
FM-NC 810D 840Di
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Siemens AG 2000. All rights reserved
1-36
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA)
−
04.00 Edition
1.4 Indirect programming
Indirect programming enables programs to be used
universally. The extended address (index) is
substituted by a variable of suitable type.
All addresses can be configured, except for:
•
N – block number
•
G – G command
•
L – subroutine
Indirect programming is not possible for any settable
addresses.
Example: X[1] is not permitted instead of X1.
Programming
ADDRESS[INDEX]
Programming examples
Spindle
S1=300
Direct programming
DEF INT SPINU=1
S[SPINU]=300
Indirect programming:
Speed 300 rpm for the spindle whose
number is stored in the variable SPINU (1 in
this example).
Feed
FA[U]=300
Direct programming
DEF AXIS AXVAR2=U
FA[AXVAR2]=300
Indirect programming:
Feed for positioning axis whose address
name is stored in the variable of type AXIS
with variable name AXVAR2.
Measured value
$AA_MM[X]
Direct programming
DEF AXIS AXVAR3=X
$AA_MM[AXVAR3]
Indirect programming:
Measured value in machine coordinates for
axis whose name is stored in the variable
AXVAR3.

Siemens SINUMERIK 840D Specifications

General

Series	SINUMERIK 840D
Axes	Up to 31
Channels	Up to 10
Operating System	Windows-based
Power Supply	24 V DC
Control Unit Type	CNC
Interface	Ethernet, PROFIBUS
Display	TFT color display
Interpolation	Spline
PLC	Integrated PLC
Data Storage	CompactFlash, USB