Step Instructions - Omron SYSMAC CP Series Instruction & Reference Manual

Step Instructions

In CP1E series PLCs, STEP(008)/SNXT(009) can be used together to create step programs.
Instruction
SNXT(009): STEP
START
STEP(008): STEP
DEFINE
a
Process A
b
Process B
c
Process C
d
End
Note Work bits are used as the control bits for A, B, C and D.
CP1E CPU Unit Instructions Reference Manual(W483)
Operation
Controls progression to the next step of the program.
Indicates the start of a step. Repeats the same step pro-
gram until the conditions for progression to the next step
are established.
Corresponds
a
Process A
b
Process B
c
Process C
d
Step Ladder section start instruction
Step Ladder section start instruction
Step
SNXT
Starts the step programming area
A
a turns ON
STEP
Proceeds to the next step
A
Process A repeated until b turns ON.
SNXT
b turns ON
B
STEP
B
Process B repeated until c turns ON.
SNXT
C
STEP
C
SNXT
D
STEP
2 Instructions
Diagram
Equivalent to
Equivalent to
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
2
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