External Zero Offset - Siemens sinumerik 840d Programming Manual

Frames
6

6.5 External zero offset

840D 840D
NCU 571 NCU 572
NCU 573
6.5 External zero offset
External zero offset
This is another way of moving the zero point
between the basic and workpiece coordinate
system.
Only linear translations can be programmed with the
external zero offset.
Programming offset values, $AA_ETRANS
The offset values are programmed by assigning the
axis-specific system variables.
Assigning offset value
$AA_ETRANS[axis]=R
R is the arithmetic variable of type REAL which
I
contains the new value.
The external offset is generally set by the PLC and
not specified in the part program.
The value entered in the part program only becomes
active when the corresponding signal is enabled at
the VDI interface (NCU-PLC interface).
6-206
FM-NC 810D 840Di
I
Y Y
MCS MCS
Preset offset
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
12.98
Y Y Y
BCS BOS SZS
G54...G599
X
Basic frame
External zero offset
DRF offset
X
Kinematic transformation
X
 Siemens AG 2000. All rights reserved
6
X
SZS
BOS
BCS
MCS