Sfc System Variable - Siemens SIMATIC PCS 7 Programming And Operating Manual

Appendix

7.2 SFC System Variable

7.2 SFC System Variable
Overview
SFC Visualization requires the following tags for operating and monitoring SFCs:
Tag
<S7 program>#AsRead
<S7 program>#AsWrite
@SFCDeltaLoaded
90
Required for...
Reading data from the AS <S7 program>
Writing data from the AS <S7 program>
Delta download to the OS.
As long as the tag value = 1, the data for SFC Visualization are downloa‐
ded again from the ES.
Programming and Operating Manual, 05/2017, A5E41356392-AA
SFC Visualization (V9.0)