Omron SYSMAC CV Series Operation Manual page 386

STEP DEFINE and STEP START: STEP(008)/SNXT(009)
0000 0000
01(SW A1) 02(SW B1)
0000 0000
01(SW A1) 02(SW B1)
Programming for process A
0000
03(SW A2)
Programming for process B
0000
04(SW B2)
Programming for process C
0000
05(SW D)
Note In the above programming, CIO 010002 is used in two
SNXT(0009) instructions. This will not produce a duplica-
tion error during the program check.
Example 3:
Parallel Execution
Process C
SW2
374
The program for this process, shown below, starts with two SNXT(009) instruc-
tions 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).
The following process requires that two parts of a product pass simultaneously
through two processes each before they are joined together in a fifth process.
Various sensors are positioned to signal when processes are to start and end.
SW1 SW3
Process A
Process D
SW4
(009)
SNXT 010000
(009)
SNXT 010001
(008)
Process
STEP 010000
A started.
(009)
Process
SNXT 010002
A reset.
Process
(008)
STEP 010001 B started.
(009)
Process
SNXT 010002
B reset.
Process
(008)
C started.
STEP 010002
(009)
Process
SNXT 024614
C reset.
(008)
STEP
SW5
Process B
SW6
Section 5-29
Address Instruction Operands
jLD
00000 000001
00001 AND NOT 000002
00002 SNXT(009) 010000
00003 LD NOT 000001
jAND
00004 000002
00005 SNXT(009) 010001
00006 STEP(008) 010000
Process A
00100 LD 000003
00101 SNXT(009) 010002
00102 STEP(008) 010001
Process B
00100 LD 000004
00101 SNXT(009) 010002
00102 STEP(008) 010002
Process C
00200 LD 000005
00201 SNXT(009) 024614
00202 STEP(008)
SW7
Process E
---