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9.2.6
Automatic
Overview
In the Automatic mode (following-block mode), the FM 453 processes tra-
versing programs . autonomously. These programs are created with "Parame-
terize FM 453" (see Chapter 5, 5.3.4) and stored as a data block. The travers-
ing programs contain information about movement sequences and outputs
(see Chapter 10).
Program Selection
Programs are selected (job no. 17) by way of the user program, by specifying
a program number and an optional block number, as well as the direction of
machining. A program can be selected only when other programs have been
interrupted or terminated or at the start of a program.
A selected program remains active until it is inactivated by selecting program
number = 0, or overwritten by selecting another program.
If modifications are made to a preselected program, including the subpro-
gram, preselection of the program is canceled. You must then select the pro-
gram again. A modification can be made to a program when BL = 0 (start of
program/end of program) and on Stop.
Start
Start with au-
tomatic block
search for-
ward
Start with au-
tomatic block
search in re-
verse
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
Select Program
Triggering
of
of
Block
Processing
Movement
No.
Direction
0
forward
0
reverse
e.g. 30
forward
e.g. 30
reverse
forward
reverse
Description of Functions
Type of Movement
(According to Programmed Blocks)
(According to Programmed Blocks)
Start at beginning of program, process
by ascending block number
Start at end of program, process by de-
scending block number
Block search forward to block No. 30,
by ascending block number
Block search in reverse to block
No. 30, by descending block number
1. Automatic block search forward to
interruption point
2. Positioning to interruption point (if
a movement was performed in
another mode)
3. Process the interrupted block and
continue the program
1. Automatic block search in reverse
to interruption point
2. Positioning to interruption point (if
a movement was performed in
another mode)
3. Process the interrupted block and
continue the program
9-29
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