User Manual 08/2003 Edition

02.99
Setting up
consistent data
transfer (e.g. for
SIMATIC S7)
Siemens AG 2003 All rights reserved
SIMODRIVE POSMO A User Manual (POS1) – 08.03 Edition
4 Communications via PROFIBUS DP
4.4 Settings at the PROFIBUS DP master
Proceed as follows to generate the required user program for consistent
data transfer:
Open ”OB1” (object folder).
In the Program Editor, enter the ”CALL SFC 14” command and
press the RETURN key. The SCF 14 is displayed with its input and
output parameters.
Supply the input and output parameters. Now, call–up SFC 15 and
appropriately supply the parameters.
When the two SFCs are called–up, the associated block shells for
these standard functions are automatically copied into the block object
folder from the STEP 7 standard library.
In order to be able to simply check the data transfer in the application
example, marshall the data, as shown in the example, to an
appropriate data block.
Now save OB 1 with save and close the window of the program editor
for the OB 1.
Now create DB 40. Using the task bar, change from Windows 95/NT
to the SIMATIC Manager and select the blocks object folder. The
block objects, system data, OB 1, DB 40, SFC 14 and SCF 15 are
in this object folder.
Transfer these with ”download all blocks” into the CPU 315–2DP.
After the transfer has been completed, the CPU 315–2DP must be
switched back to RUN.
If the motor is connected, the LED display elements for the DP interface
are dark. The CPU must be in the RUN condition.
4-121
4