Automatic - Siemens SIMATIC FM 353 Manual

9.2.6

Automatic

Overview
In the Automatic mode (following-block mode), the FM 353 processes traversing
programs autonomously. These programs are created with "Parameterize FM 353"
(see Chapter 5, 5.3.4) and stored as a data block. The traversing programs contain
information about movement sequences and outputs (see Chapter 10).
Program selection
Programs are selected (user DB, DBX39.5) by way of the user program, by speci-
fying 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 inter-
rupted or terminated or at the start of a program.
A selected program remains active until it is inactivated by selecting program num-
ber = 0, or overwritten by selecting another program.
If modifications are made to a preselected program, including the subprogram, pre-
selection of the program is canceled. You must then select the program again. A
modification can be made to a program when BL = 0 (start of program/end of pro-
gram) and on Stop.
Triggering
of move- f
ment
Start
Start with
automatic
block
search for-
ward
Start with
automatic
block
search in
reverse
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Select program
Block Processing
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) ( di t
Start at beginning of program, process by as-
cending block number
Start at end of program, process by descending
block number
Block search forward to block No. 30, by as-
cending block number
Block search in reverse to block No. 30, by de-
scending block number
1. Automatic block search forward to interrup-
tion point
2. Positioning to interruption point (if a move-
ment was performed in another mode)
3. Process the interrupted block and continue
the program
1. Automatic block search in reverse to inter-
ruption point
2. Positioning to interruption point (if a move-
ment was performed in another mode)
3. Process the interrupted block and continue
the program
d bl k )
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