Omron FQM1-CM001 Special Program Sections, Programming, Appendix A, Instruction Combinations

Programming Appendix A

Special Program Sections

FQM1 programs have special program sections that will control instruction conditions.

The following special program sections are available.

Program section	Instructions	Instruction condition	Status
Subroutine	SBS(091), JSB(982),	Subroutine program	The subroutine program section
	SBN(092), and RET(093)	being executed.	between SBN(092) and RET(093)
	instructions		instructions is being executed.
IL(002) - ILC(003) section	IL(002) and ILC(003)	Section is interlocked	The output bits are turned OFF and
	instructions		timers are reset. Other instructions will
			not be executed and previous status
Step Ladder section	STEP(008) instruction
			will be maintained.
Block program section	BPRG(096) instructions and	Block program being	The block program listed in mnemonics
	BEND(801) instructions	executing.	between the BPRG(096) and
			BEND(801) instructions is being exe-
			cuted.

Instruction Combinations

The following table shows which of the special instructions can be used inside other program sections.

	Subroutine	IL(002) -	Step ladder	Block program
		ILC(003)	section	section
		section
Subroutine	Not possible.	Not possible.	Not possible.	Not possible.
IL(002) - ILC(003)	OK	Not possible.	Not possible.	Not possible.
Step ladder section	Not possible.	OK	Not possible.	Not possible.
Block program section	OK	OK	OK	Not possible.

Note Instructions that specify program areas cannot be used between two different tasks.

Subroutines

Place all the subroutines together just before the END(001) instruction in all programs but after programming other than subroutines. A subroutine cannot be placed in a step ladder, block program, or other subroutine. If instructions other than a subroutine program are placed after a subroutine program (SBN(092) to RET(093)), those instructions will not be executed.

Program

Subroutine

Program

Subroutine

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