Siemens SINUMERIK 808D ADVANCED Programming And Operating Manual page 245

Address Significance
GOTOF GoForward instruction
IC Coordinate specified
using incremental
dimensions
IF Jump condition
LIMS Upper limit speed of
the spindle with G96,
G97
MEAS Measurement with
deletion of distance-to-
go
MEAW Measurement without
deletion of distance-to-
go
$A_DBB[n] Data byte
$A_DBW[n] Data word
$A_DBD[n] Data double-word
$A_DBR[n] Real data
$AA_MM[ Measurement result for
axis
] an axis in the machine
coordinate system
axis
$AA_MW[ Measurement result for
] an axis in the work-
piece coordinate sys-
tem
$AC_MEA[1] Measuring task status
Programming and Operating Manual (Turning)
6FC5398-5DP10-0BA2, 06/2015
Value assign- Information
ments
- A GoTo operation is performed to
a block marked by a label; the
jump destination is in the direction
of the end of the program.
The dimension can be specified
for the end or center point of a
certain axis irrespective of G90.
- If the jump condition is fulfilled, the
GoTo operation to the block with
the following
otherwise, the next instruc-
tion/block will follow. In one block,
several IF instructions are possi-
ble.
Relational operators:
= = equal, <> not equal
> greater than, < less than
>= greater than or equal to
<= less than or equal to
0.001 ... 99 Limits the spindle speed with the
999.999 G96 function enabled - constant
cutting rate and G97
+1 =+1: Measuring input 1, rising
edge
-1
=-1: Measuring input1, falling edge
+1 =+1: Measuring input 1, rising
edge
-1
=-1: Measuring input1, falling edge
Reading and writing PLC variables N10 $A_DBR[5]=16.3 ;
Axis
- : Identifier of an axis (X, Z)
traversing when measuring
Axis
- : Identifier of an axis (X, Z)
traversing when measuring
- Default condition:
0: Default condition, probe did not
switch
1: Probe switched
Programming
N10 GOTOF LABEL2
...
N130 LABEL2: ...
N10 G90 X10 Z=IC(20) ;Z
-incremental dimension,
X - absolute dimension
N10 IF R1>5 GOTOF
LABEL3
label is performed;
, ...
N80 LABEL3: ...
See G96
N10 MEAS=-1 G1 X... Z...
F...
N10 MEAW=1 G1 X... Z...
F...
Write Real variables
; with offset position 5
; (position, type and
meaning are agreed be-
tween NC and PLC
)
N10 R1=$AA_MM[X]
N10 R2=$AA_MW[X]
N10 IF $AC_MEAS[1]==1
GOTOF .... ; Continue
program when probe has
switched ...
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