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Step Instructions
Section 3-22
Note
Work bits are used as the control bits for A, B, C and D.
3-22-1 STEP DEFINE and STEP START: STEP(008)/SNXT(009)
Purpose
SNXT(009) is placed immediately before the STEP(008) instruction and con-
trols step execution by turning the specified control bit ON. If there is another
step immediately before SNXT(009), it also turns OFF the control bit of that
process.
STEP(008) is placed immediately after the SNXT(009) instruction and before
each process. It defines the start of each process and specified the control bit
for it. It is also placed at the end of the step programming area after the last
SNXT(009) to indicate the end of the step programming area. When it
appears at the end of the step programming area, STEP(008) does not take a
control bit.
Ladder Symbols
Process A
Process B
Process C
End
Corresponds
Process A
Process B
Process C
a turns ON
Starts the step programming area
Proceeds to the next step
Process A repeated until b turns ON.
b turns ON
Process B repeated until c turns ON.
c turns ON
Process C repeated until d turns ON.
Proceeds to the end of the ladder
step programming area
d turns ON
Step programming area completed
SNXT(009)
B
B
: Bit
Summary of Contents for SYSMAC CS1D-CPU**
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Page 29: ...xxx...
Page 185: ...146 List of Instructions by Function Code Section 2 4...
Page 1389: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2...
Page 1390: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits...
Page 1391: ...1352 ASCII Code Table Appendix A...