Siemens SIMATIC FM 353 Manual page 240

Description of Functions
Example 2
Procedure for changing the actual value and the velocity in block 10 of traversing
program 1.
1. Submit job request to read the block. Enter the following values in the user DB:
DB type = 4
Number = 1
Number of data = 10
Job type = 1
Data array = 0
2. Set Write request (user DB, DBX39.3).
3. Following termination of the Write request (one cycle later), read out the block
by setting the Read request (user DB, DBX43.3).
4. Save the data read out from DBB 446 to 469 of the user DB in DBB196 to 219.
5. Enter the actual value in data array DBB208 to 211 in the user DB (data type
DINT).
6. Enter the velocity in DBB212 to 215 of the user DB (data type DINT).
7. Enter a 4 in DBB199 of the user DB (request) (retentive storing of the block).
8. Set Write request (user DB, DBX39.3).
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FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0