11. Operation
11-2
11.2 User program operations
The following describes the operation of user programs (ladder, HI-FLOW, and C language).
For ladder programs and HI-FLOW, user programs operate on a sequence cycle specified by the user. C-
language programs (user tasks) operate asynchronously with ladder programs and HI-FLOW.
In addition, if you are using both ladder programs and HI-FLOW, HI-FLOW processing occurs after ladder
program processing.
Figure 11-1 User program operation (ladder and HI-FLOW individual use)
Figure 11-2 User program operation (ladder and HI-FLOW simultaneous use)
C-language (user-task) processing
Ladder processing or HI-FLOW processing
Ladder processing or HI-FLOW processing
Sequence cycle
Next sequence cycle
C-language (user-task) processing
Sequence cycle
Next sequence cycle
Ladder processing
HI-FLOW processing
Ladder processing
HI-FLOW processing
C-language (user-task) processing
C-language (user-task) processing
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