1 Overview
1-6
CJ2 CPU Unit Hardware User’s Manual
z The optimum languages can be combined for structured programming.
Ladder diagrams, ST, and SFC languages can be freely combined in the user program. Being able
to use the optimum languages for a particular process helps reduce the time involved in program-
ming.
In addition, ladder diagrams and ST language can be freely used for function blocks (FBs) in ladder
diagrams and ST programs, and for transition and action programs in SFC. This feature makes it
possible to optimize structured programming.
z Reduced Effect on Cycle Time from Online Editing
The additional cycle time due to online editing has been reduced to approx. 1 ms, minimizing the
effects on equipment operation during debugging.
z Fast, High-capacity Data Tracing
Up to 32 Kwords of data can be traced (8 time more than previously), with ample trigger conditions,
and data can be traced continuously for long periods of time.
Improved Debugging
User program
Task
Task
Task
Task
SFC
Step progression control
Ladder diagram
Control of equipment
and external devices
ST
Math processing
a := a + 1;
The programming language
suited to the process can be used.
Transition and action
programs in SFC
Ladder diagram
ST
FB_(A:=B,C=>D);
a := a + 1;
The programming
language suited to
the process can
be used.
FB in ladder diagram
FB in ST program
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