Siemens SIMATIC C7-613, Manual

Page: 89 / 200

Integration into the User Program
4-33
C7-613 Control System
A5E00138934-03
4.7 FB “HMI MENU” for the Screen Hierarchy
Function
The “HMI MENU” FB provides support for the screen hierarchy.To accomplish this,
the FB fetches information from the “MENU_DB” DB (see Section 4.3.10)
regarding which key is to display which screen or which info text, and calls the
corresponding objects. The softkeys and the cursor keys are used to change the
screens.
Inserting an FB in the project
In SIMATIC Manager, open the “C7 613” library and copy the “HMI MENU” FB to
the block container of your project.
Structure and Description
Table 4-10 Parameters of the “HMI MENU” FB
Parameter Declaration Data Type Memory
Area
Description
API_DB INPUT BLOCK_DB DB Number of the instance DB of
the “HMI API” FB. Needed for
synchronization of “HMI MENU”
FB and “HMI API” FB.
MENU_DB INPUT BLOCK_DB DB Number of the DB for the
screen hierarchy (refer to
Section 4.3.10)
RETVAL OUTPUT INT M, D, L, A Return value; provides
information about possible
errors. The return values are
described in Appendix B.1
Note
The screen hierarchy is identical in all 5 selected languages.