Technical data

Controlling and Monitoring Variables
17.4 Changing Operator Control and Monitoring Attributes with CFC
Programming with STEP 7
Manual, 05/2010, A5E02789666-01 399
17.4 Changing Operator Control and Monitoring Attributes with CFC
Overview
With CFC, you create your user program by selecting blocks that already have operator control and
monitoring capabilities from a library, and placing and linking them in a chart.
Requirement
You have inserted an S7 program in a STEP 7 project, created a CFC chart, and placed blocks in
it.
Basic Procedure
Note
If you use blocks which you have created yourself and to which you have assigned the system
attribute S7_m_c, you can give these blocks operator control and monitoring capabilities by activating
the "Operator Control and Monitoring" check box in the "Operator Control and Monitoring" dialog box
(menu command Edit > Special Object Properties > Operator Control and Monitoring).