Siwarex Fta In Cyclic Step 7 - P Rogram - Siemens SIWAREX FTA Device Manual

Programming in SIMATIC STEP 7
Other scale specific parameters that are also changed during the control program
run-time can be defined in two different ways:
- Using the SIWATOOL FTA parameter definition tool
- By defining the parameters in a scale data block and then transferring them to the
SIWAREX FTA. Cyclic communication between the SIWAREX FTA module and the
SIMATIC CPU is established through the FB SIWA_FTA function block (FB41).
8.3 SIWAREX FTA in cyclic STEP 7 - Program
SIWAREX FTA communicates with the SIMATIC CPU with the function block FB
SIWA_FTA. While programming the call, an instance data block is created for the
FB SIWA_FTA. Besides the instance data block, a scale DB is required for every
Scale SIWAREX FTA, in which the scale parameters are stored. The UDT that
comes with it can also be used for creating the scale DB.
The vector DB must also be loaded in the SIMATIC CPU. A vector DB can be
used by more than one SIWAREX FTA.
The function block FB SIWA_FTA and the data modules are located on the
SIWAREX FTA configuration package CD for SIMATIC S7 in directory
Getting_Started_FTA as a component of the "Getting started" example program.
The function block FB SIWA_FTA is called one time for each scale in the
application program cyclically in a program level (e.g. in OB1) and provided with
call parameters.
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SIWAREX FTA