Omron CQM1H-SCB41 Ladder Program Structure, Operand Areas and Address Ranges, Programming Example

Using Protocol Macros				Section 5-7
Operand Areas and Address Ranges
	Area	C	S	D
	IR and SR Areas	IR 000 to IR 255		IR 000 to IR 252
	HR Area	HR 00 to HR 99
	AR Area	AR 00 to AR 27
	LR Area	LR 00 to LR 63
	Timer and	TIM/CNT000 to TIM/CNT511
	Counter Area
	Data Memory	DM 0000 to DM 6655		DM 0000 to
	(DM) Area			DM 6143
	Extended Data	EM 0000 to EM 6143
	Memory (EM)
	Area
	Indirect DM	*DM 0000 to *DM 6655
	address
	Indirect EM	*EM 0000 to *EM 6143
	address
	Constant Area	See description of	#0000 to #FFFF	---
		control data.

5-7-2 Ladder Program Structure

When creating a ladder program, note the following points.

•To ensure that a PMCR(––) instruction is not executed while another PMCR(––) instruction is being executed, use the Protocol Macro Executing Flag in an NC input condition.

•Use an OFF condition for the Protocol Macro Executing Flag and perform pro- cessing to read the results of sequence execution, or perform processing when a sequence ends in an error.

Programming Example

Protocol Macro

Executing Flag

Input condition 20708

PMCR

20708

DIFD (14) A

A

Reading of sequence execution results

Processing of sequence errors

87