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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 processed, the "Skip block" control signal can be used to decide
whether skippable blocks are to be skipped. The last block cannot be skip-
pable.
Block Number N
The program is executed in ascending order of block numbers (1...255) or in
descending order if executed in reverse.
G Function
In each traversing block only one G function may be entered from each
Group 1...3
G function group.
The following figure shows an example.
G Functions
Table 10-1 lists the possible G functions and the individual G function
groups.
Table 10-1
04
87
88
89
90
91
30
31
32
.
.
.
39
43
44
50
60
64
1) These G functions take effect only on a block-by-block basis. The other G functions
G30, G90 and G64 are the initial settings after the start of the program.
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
/
N
G2
G3
G1
10
90
34
43
G Functions
G No.
1)
Dwell time
Turn off measuring system shift for Set Actual Value On-
the-Fly
1)
Continuous travel for (–) for Set Actual Value On-the-Fly
1)
Continuous travel for (+) for Set Actual Value On-the-Fly
Absolute measure
Incremental dimensions
100% override on acceleration/deceleration
10% override on acceleration/deceleration
20% override on acceleration/deceleration
.
.
.
90% override on acceleration/deceleration
Tool offset (+)
Tool offset (–)
1)
External block change
Block change – exact positioning
Set actual value on-the-fly, continuous-path mode
remain active until canceled explicitly.
Writing Traversing Programs
X/t
F
M1
100 000
400 00
G Function
M3
D
M2
10
G Function
Group
1
2
3
10-3
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