Siemens SINUMERIK Series Function Manual page 544

N3: Software cams, position switching cycles - only 840D sl
8.2 Cam signals and cam positions
• SD41505 SW_CAM_PLUS_POS_TAB_3[n]
• SD41506 SW_CAM_MINUS_POS_TAB_4[n]
• SD41507 SW_CAM_PLUS_POS_TAB_4[n]
Note
Owing to the grouping of cam pairs (eight in each group), it is possible to assign different
access authorization levels (e.g. for machine-related and workpiece-related cam positions).
The positions are entered in the machine coordinate system. No check is made with respect
to the maximum traversing range.
Dimension system metric/inch
With the setting:
MD10260 CONVERT_SCALING_SYSTEM = 1
, the cam positions no longer refer to the configured basic dimension system, but to the
dimension system set in the following machine data:
MD10270 POS_TAB_SCALING_SYSTEM (measuring system of position tables)
Value
0
1
MD10270 therefore defines the dimension system for position data from setting data
SD41500 ... SD41507.
A switchover with
Sensing of cam positions
To set the cam signals, the actual position of the axes is compared to the cam position.
Writing/reading of cam positions
The setting data can be read and written via HMI, PLC and part program.
Accesses from the part program are not synchronous to machining.
Synchronization can only be achieved by means of a programmed block preprocessing stop
(
STOPRE
It is possible to read and write the cam positions with FB2 and FB3 in the PLC user program.
544
Meaning
Metric
inch
/ or
G70 G71 G700
command).
/ has no effect.
G710
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Position of plus cams 17 - 24
Position of minus cams 25 - 32
Position of plus cams 25 - 32
Extended Functions