Correspondences between PL7 and Control Expert: functional modules
(Original Document)
About us
Introduction
Conversion replaces PL7 functional module characteristics by their Control Expert equivalents.
Functional modules
The following table describes any correspondence and differences between PL7 and Control Expert functional module characteristics.
PL7
Control Expert
Status
Functional modules
Yes
Yes
Converted
Nesting of functional modules
No limitation
No limitation
Converted
Comment
0..127 characters
0..255 characters
Modified
Size of description file
No limitation
No limitation
Converted
Maximum capacity of a functional module
Number of functional modules
No limitation
No limitation
Converted
Number of sections
LD, ST, IL
No limitation
No limitation
Converted
Grafcet
1
No limitation
Modified (1)
Number of events in a section
No limitation
No limitation
Converted (2)
Number of macro steps:
Limited by the processor
None
Deleted (1)
Number of animation tables
No limitation
No limitation
Converted
Number of runtime screens
No limitation
No limitation
Converted
Legend:
(1)
The PL7 application converter does not convert all types of functional modules.
(2)
The possible programming languages are the following:
  • LD, ST, IL