Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 953

Step Instructions
A20012 (Step Flag) is turned ON for one cycle when STEP(008) is executed.
This flag can be used to conduct initialization once the step execution has
started.
Placement Conditions for Step Programming Areas (STEP B to STEP)
STEP(008) and SNXT(009) cannot be used inside of subroutines, interrupt
programs, or block programs.
Be sure that two steps are not executed during the same cycle.
Instructions that Cannot be Used Within Step Programs
The instructions that cannot be used within step programs are listed in the fol-
lowing table.
Function
Sequence Control Instruc-
tions
Subroutine Instructions
Related Bits
Name
Step Flag
Mnemonic
END(001)
IL(002)
ILC(003
JMP(004)
JME(005)
CJP(510)
CJPN(511)
JMP0(515)
JME0(516)
SBN(092)
RET(093)
Start
Address
A20012
Section 3-22
Name
END
INTERLOCK
INTERLOCK CLEAR
JUMP
JUMP END
CONDITIONAL JUMP
CONDITIONAL JUMP
NOT
MULTIPLE JUMP
MULTIPLE JUMP END
SUBROUTINE ENTRY
SUBROUTINE RETURN
1 cycle
Details
ON for one cycle when a
step program is started
using STEP(008). Can be
used to reset timers and
perform other processing
when starting a new step.
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