Omron FQM1-MMA21, FQM1-CM001 Programming, Appendix A, Instructions Not Allowed in Subroutines

Programming Appendix A

Instructions Not Allowed in Subroutines

The following instructions cannot be placed in a subroutine.

Function	Mnemonic	Instruction
Ladder Step Control	STEP(008)	Define step ladder section
	SNXT(009)	Step through the step ladder

Note Block Program Sections

A subroutine can include a block program section.

Instructions Not Allowed in Step Ladder Program Sections

Function	Mnemonic	Instruction
Sequence Con-	END(001)	END
trol
	IL(002) and ILC(003)	INTERLOCK and INTERLOCK CLEAR
	JMP(004) and JME(005)	JUMP and JUMP END
Subroutines	SBN(092) and RET(093)	SUBROUTINE ENTRY and SUBROUTINE RETURN
Block Programs	IF(802) (NOT), ELSE(803), and IEND(804)	Branching instructions
	BPRG(096) and BEND(801)	BLOCK PROGRAM BEGIN/END

Note A step ladder program section can be used in an interlock section (between IL(002) and ILC(003)). The step ladder section will be completely reset when the interlock is ON.

Instructions Not Allowed in Block Program Sections

The following instructions cannot be placed in block program sections.

Classification by	Mnemonic	Instruction
Function
Sequence Control	IL(002) and ILC(003)	INTERLOCK and INTERLOCK CLEAR
	END(001)	END
Sequence Output	DIFU(013)	DIFFERENTIATE UP
	DIFD(014)	DIFFERENTIATE DOWN
	KEEP(011)	KEEP
	OUT	OUTPUT
	OUT NOT	OUTPUT NOT
Timer/Counter	TIM	TIMER
	TIMH	HIGH-SPEED TIMER
	TMHH(540)	ONE-MS TIMER
	CNT	COUNTER
	CNTR	REVERSIBLE COUNTER
Subroutines	SBN(092) and RET(093)	SUBROUTINE ENTRY and SUBROUTINE RETURN
Data Shift	SFT(010)	SHIFT
Ladder Step Control	STEP(008) and SNXT(009)	STEP DEFINE and STEP START
Block Program	BPRG(096)	BLOCK PROGRAM BEGIN

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(002) and ILC(003)). The block pro- gram section will not be executed when the interlock is ON.

(3)A JUMP instruction (JMP(004)) can be used in a block program section, but the JUMP (JMP(004)) and JUMP END (JME(005)) instructions must be used in a pair within the block program section. The program will not execute properly unless these instructions are paired.

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