Step Instructions; Step Define And Step Start-Step(08)/Snxt(09) - Omron SYSMAC C2000H Operation Manual

Step Instructions

00000
5-22

Step Instructions

5-22-1 STEP DEFINE and STEP START–STEP(08)/SNXT(09)
Limitations
Description
program that was suspended is then restarted after 10 seconds. Note that
the ladder diagram simply has the mnemonic code typed after the BPRG(96)
instruction.
IF<02>
BPPS<11>
ELSE<03>
BPPS<11>
IEND<04>
TIMW<03>
BPRS<12>
BPRS<12>
BEND<01>
The step instructions STEP(08) and SNXT(09) are used in conjunction to set
up breakpoints between sections in a large program so that the sections can
be executed as units and reset upon completion. A section of program will
usually be defined to correspond to an actual process in the application. (Re-
fer to the application examples later in this section.) A step is like a normal
programming code, except that certain instructions (e.g. IL(02)/ILC(03),
JMP(04)/JME(05)) may not be included.
Ladder Symbols
STEP(08) B
SNXT(09) B
Control bits within one section of step programming must be sequential and
from the same word.
STEP(08) uses a control bit in the IR or HR areas to define the beginning of
a section of the program called a step. STEP(08) does not require an execu-
tion condition, i.e., its execution is controlled through the control bit. To start
execution of the step, SNXT(09) is used with the same control bit as used for
STEP(08). If SNXT(09) is executed with an ON execution condition, the step
with the same control bit is executed. If the execution condition is OFF, the
step is not executed. The SNXT(09) instruction must be written into the pro-
BPRG(96) 00
Address Instruction
00000
00001
00001
00002
01
00003
00004
02
00005
00006
000
00007
#0100
01
00008
02
00009
00010
STEP(08)
Section 5-22
Operands
LD 00000
BPRG(96)
IF<02> 00001
BPPS<11>
ELSE<03>
BPPS<11>
IEND<04>
TIMW<03>
# 0100
BPRS<12>
BPRS<12>
BEND<01>
Definer Data Areas
B: Control bit
IR, AR, HR, LR
B: Control bit
IR, AR, HR, LR
00
01
02
000
01
02
199