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SFC Overview
Section 1-1
3
Processing Contents
Processing Contents
Step1
Step2
Step 3
Processing Contents
Developed by
“A”
Developed by
“B”
Developed by
“C”
Steps can be
developed separately.
Programs are independently completed for each step, and are therefore simple to
reuse.
Processing is performed on a per step basis, giving process time, only to active steps,
and not to inactive steps, allowing the CPU unit cycle time to be shortened.
1-1-2 CX-Programmer
Features
The CX-Programmer Support Software is equipped with an SFC editor, and can be
used to create, monitor, and debug SFC programs for CS/CJ-series and CJ2-series
PLCs. The CX-Programmer supports SFC language in addition to conventional ladder
and structured text (ST) programming languages.
With desirable features, such as the user interface, carried over from the earlier series,
and with the added SFC programming function, the CX-Programmer provides a
programming environment that can take full advantage of the SFC language’s features.
Combining SFC, Ladder, and ST for User Programs
Each program allocated to a task can be coded as an arbitrary combination of SFC,
ladder, and ST. Hence, the language best suited to each process can be utilized (e.g.
SFC for step progression, ladder for device control, and ST for mathematical
processes).
The common functions of CX-Programmer are still available to use, regardless of the
language used.
ST
Mathematical
Processes
Programming
Language Best
Suited to the
Process is
Selectable
SFC
Step Progression
Control
User Program
Task
Task
Task
Task
a = a + 1
Ladder
Device Control
Summary of Contents for SYSMAC CX-Programmer 8.1
Page 1: ...Operation Manual SFC Programming SYSMAC WS02 CXPC1 V8 CX Programmer Ver 8 1 Cat No W469 E1 04...
Page 2: ...ii CX Programmer Ver 8 1 WS02 CXPC1 V8 Operation Manual SFC Programming Revised February 2009...
Page 16: ......
Page 56: ...Precautions When Creating SFC Programs Section 1 5 40...
Page 118: ...Monitoring Section 4 5 102...
Page 150: ...Index 134...
Page 152: ...Revision History 136...
Page 153: ......
Page 154: ......