5-113
5 Understanding Programming
CJ2 CPU Unit Software User’s Manual
5-10 Precautions
5
5-10-2 Special Program Sections
The following instructions cannot be placed in block program sections
Note 1 Block programs can be used in a step ladder program section.
2 A block program can be used in an interlock section (between IL and ILC). The block program section will
not be executed when the interlock is ON.
3 A block program section can be used between MULTIPLE JUMP (JMP0) and MULTIPLE JUMP END
(JME0).
4 A JUMP instruction (JMP) and CONDITIONAL JUMP instruction (CJP/CJPN) can be used in a block pro-
gram section. JUMP (JMP) and JUMP END (JME) instructions, as well as CONDITIONAL JUMP
(CJP/CJPN) and JUMP END (JME) instructions cannot be used in the block program section unless they
are used in pairs. The program will not execute properly unless these instructions are paired.
Instructions Not Supported in Block Program Sections
Classification by Func-
tion
Mnemonic Instruction
Sequence Control FOR(512), NEXT(513),
and BREAK(514)
FOR, NEXT, and BREAK LOOP
IL(002) and ILC(003) INTERLOCK and INTERLOCK CLEAR
JMP0(515) and
JME0(516)
MULTIPLE JUMP and MULTIPLE JUMP END
END(001) END
Sequence Input UP(521) CONDITION ON
DOWN(522) CONDITION OFF
Sequence Output DIFU DIFFERENTIATE UP
DIFD DIFFERENTIATE DOWN
KEEP KEEP
OUT OUTPUT
OUT NOT OUTPUT NOT
Timer/Counter TIM HUNDRED-MS TIMER
TIMH TEN-MS TIMER
TMHH(540) ONE-MS TIMER
TIMU TENTH-MS TIMER
TMUH HUNDREDTH-MS TIMER
TTIM(087) ACCUMULATIVE TIMER
TIML(542) LONG TIMER
MTIM(543) MULTI-OUTPUT TIMER
CNT COUNTER
CNTR REVERSIBLE COUNTER
Subroutines SBN(092) and RET(093) SUBROUTINE ENTRY and SUBROUTINE RETURN
Data Shift SFT SHIFT
Ladder Step Control STEP(008) and
SNXT(009)
STEP DEFINE and STEP START
Data Control PID PID CONTROL
Block Program BPRG(096) BLOCK PROGRAM BEGIN
Damage Diagnosis FPD(269) FAILURE POINT DETECTION
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