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Another way to implement your frequently used control solution and ensure a fully integrated
engineering environment is to make use of the option User Defined PC Elements.
A user defined PC element appears in every sense as a standard PC element. Actually the
control solution of a user defined PC element is defined by other PC elements. See illustration
in Figure 1-41.
By designing your application with user defined PC elements you are gaining:
• Significant reduction in translation time
• Memory saving with reuse
• Similar documentation in Function Chart Builder and On-line Builder
• User defined PC element hierarchy
• Reduced man-hours in commissioning and maintenance.
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Control solution
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Library of
user defined
PC elements
Application PC program
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Signal in 2
Signal in 3
Signal in 4
Signal out
Reuse
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