Siemens SIMATIC FM 353 - Page 285

Writing Traversing Programs
10-3
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Skip block /
Program blocks which are not to be executed every time the program runs can be
identified as skippable blocks by an oblique “/ ”. When the program is being pro-
cessed, the “Skip block” control signal can be used to decide whether skippable
blocks are to be skipped. The last block may not be skipped.
Block number N
The program is executed in ascending order of block numbers (1 to 255) or in de-
scending order if executed in reverse.
G function group 1 − 3
In each traversing block only one G function may be entered from each G function
group.
The following figure shows an example.
/ N
G1
G2 G3 X/t F M1
M2
M3 D
400 00100 00010 90
4334
10
G functions
Table 10-1 lists the possible G functions and the individual G function groups.
Table 10-1 G functions
GNo.
G Function G Function
group
04
1)
Dwell time
87 Turn off measuring system shift for Set Actual Value On-the-Fly
88
1)
Continuous travel for (−) for Set Actual Value On-the-Fly
1
89
1)
Continuous travel for (+) for Set Actual Value On-the-Fly
1
90 Absolute dimensions
91 Incremental dimensions
30
31
32
.
.
.
39
100% override on acceleration/deceleration
10% override on acceleration/deceleration
20% override on acceleration/deceleration
.
.
.
90% override on acceleration/deceleration
2