Changing Attributes - Siemens SIMATIC PCS 7 Configuration Manual

Configuring AS functions
8.1 Principles
8.1.5

Changing attributes

Introduction
You can change the attributes of any function block. The attribute "S7_m_c = true" for example
means that the block/block I/O should be created as a structure/tag in the OS project through
the OP compilation.
Procedure
Set the attributes in the properties dialog of a block I/O on the appropriate tab.
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Compendium Part A - Configuration Guidelines (V8.2)
Configuration Manual, 08/2016, A5E38166869-AA