Omron CS1G/H-CPUxxH Instructions Manual page 843

Step Instructions
Note In the above programming, CIO 010002 is used in two
SNXT(009) instructions. This will not produce a duplication
error during the program check.
822
The program for this process, shown below, starts with two SNXT(009)
instructions that start processes A and B. Because of the way CIO 000001
(SW A1) and CIO 000002 (SW B1) are programmed, only one of these will be
executed with an ON execution condition to start either process A or process
B. Both of the steps for these processes end with a SNXT(009) that starts the
step (process C).
Process
A started.
Programming for process A
Process
A reset.
Process
C started.
Programming for process B
Process
B reset.
Process
C started.
Programming for process C
Process
C reset.
Section 3-22
Address Instruction Operands
000000 @LD 000001
000001 AND NOT 000002
000002 SNXT(009) 010000
000003 LD NOT 000001
000004 @AND 000002
000005 SNXT(009) 010001
000006 STEP(008) 010000
Process A
000100 LD 000003
000101 SNXT(009) 010002
000102 STEP(008) 010001
Process B
000100 LD 000004
000101 SNXT(009) 010002
000102 STEP(008) 010002
Process C
000200 LD 000005
000201 SNXT(009) 024614
000202 STEP(008) ---