11.5 Calling of function block
This description is based on use of the WP321DR block with data record communication and
the following data:
● Start address SIWAREX WP321: 1 (see → Hardware configuration of the electronic
weighing system (Page 104))
● HW ID SIWAREX WP321: 280 (see → Hardware configuration of the electronic weighing
system (Page 104))
● Instance data block number of SIWAREX WP321 function block: DB321
The function block can be integrated at the desired position in the user program using drag and
drop. Calling of the FB must be carried out cyclically in the control program.
Figure 11-5 Calling WP321 DR block (V1.x and V2.x) in the user program
Communication in SIMATIC S7-300/400/1200/1500
11.5 Calling of function block
SIWAREX WP321
106 Operating Instructions, 08/2019, A5E33715669A-AD