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CIMPLICITY Logic Developer - PLC Version 4.00 63
5
Logic Editors
The following logic types are supported by Logic Developer - PLC (not including
motion programming) and are compiled and downloaded to the PLC represented
by the associated GE Fanuc PLC target. The Logic folder of a GE Fanuc PLC
target includes:
■
Ladder Diagram (LD) Blocks
■
Instruction List (IL) Blocks
■
C Blocks
■
C programs
These items will be downloaded to, and run on, the target. Each block and user
program is a named section of executable code. Blocks can be grouped under
user-defined folders in the Program Blocks folder. C programs are grouped under
the main Logic folder.
Each target must contain one block or user program named “_MAIN”. On any
target except a release 6 or later Series 90™-70 PLC, the _MAIN block is first to
execute when the project is downloaded to a PLC.
Depending on the type of target PLC, blocks other than”_ MAIN” can be
scheduled for execution based on timer or I/O interrupts.
Note: On release 6 or later of Series 90™-70 PLCs, the LD program can be
scheduled. That is, the Series 90™-70 PLC does not necessarily execute the
_MAIN LD block first.
Want to know more?
In the Help Index, look up “LD Program”.