Omron CS1W-LC001 Operation Manual page 231

How to Use the Step Ladder Program Block
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To break up a Step Ladder Program, use the STEP command (21). (The default step for the Step Ladder
Program block is the constant operation step STEP00.)
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When run/stop command S1 (ITEM008) of the Step Ladder Program block turns ON, STEP00 (constantly
available step) and STEP01 (first step of step sequence) operate. Program execution is made to move to
other steps (also to specified STEPs in other Step Ladder Program blocks) when the input conditions are
satisfied during STEP01.
STEP01 onwards only can also be described without describing STEP00 (constantly available step).
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When contact input to stop move to next step switch S2 (ITEM009) in the entire Step Ladder Program block
turns ON, program execution pauses at the currently operating STEP. Output is also held at the current state
at this time. When contact input to S2 (ITEM009) returns to OFF, program execution is resumed from the
STEP that was paused.
Multiple steps
STEP00
STEP01
STEP02
STEP03
STEP04
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ITEM Command
011 01 (LOAD)
012 03 (AND)
013 07 (OUT)
ITEM Command
014 21 (SP)
015 01 (LOAD)
016 03 (AND)
017 13 (SET)
ITEM Command
018 21 (SP)
019 01 (LOAD)
020 03 (AND)
021 13 (SET)
indicates operation when run/stop command S1
turns ON.
Operand
Operand
01 From here on declared to STEP01
A Move to next STEP02 at
establishment of final input
conditions (execution of SET)
Operand
02 From here on declared to STEP02
B Move to next STEP03 at
establishment of final input
conditions (execution of SET)
Appendix 1