Siemens SINUMERIK 840D Programming Guide

15
Tables 04.00
15.2 List of s
y
stem variables
15
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Siemens AG 2000. All rights reserved
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SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
15.2.40 Encoder values
Identifier Type Description: System variable/value range/index Part pro Sync O S
$VA_IM
REAL $VA_IM[X]
Encoder actual value in machine coordinate system
(measured active measuring system), actual value compensations
are corrected
(leadscrew error compensation, backlash compensation,
quadrant error compensation)
Axes: Machine axis
RS R 4
$VA_IM1
REAL $VA_IM1[X]
Actual value in machine coordinate system (measured on encoder 1),
compensations corrected
Axes: Machine axis
RS R 4
$VA_IM2
REAL $VA_IM2[X]
Actual value in machine coordinate system (measured on encoder 2),
compensations corrected
Axes: Machine axis
RS R 4
$AA_MW
REAL $AA_MW[X]
Measured value in workpiece coordinate system
Axes: Channel axis
RW
S
RW 2
$AA_MM
REAL $AA_MW[X]
Measured value in machine coordinate system
Axes: Machine axis
RW
S
RW 2
$AA_MW1
REAL $AA_MW1[X]
Measurement result of axial measurement
Trigger event 1 in WCS
Axes: Channel axis
RW
S
RW 4
$AA_MW2
REAL $AA_MW2[X]
Measurement result of axial measurement
Trigger event 2 in WCS
Axes: Channel axis
RW
S
RW 4
$AA_MW3
REAL $AA_MW3[X]
Measurement result of axial measurement
Trigger event 3 in WCS
Axes: Channel axis
RW
S
RW 4
$AA_MW4
REAL $AA_MW4[X]
Measurement result of axial measurement
Trigger event 4 in WCS
Axes: Channel axis
RW
S
RW 4

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