Omron FQM1-CM001 Instruction Location and Input Conditions, Addressing I/O Memory Areas

Programming Appendix A

Instruction Location and Input Conditions

The following table shows the possible locations for instructions. Instructions are grouped into those that do and those do not require input conditions.

Instruction type		Possible location	Input condition	Diagram	Examples
Input	Logical start	Connected directly to	Not required.		LD, LD >, and other
instructions	(Load	the left bus bar or is at			symbol comparison
	instructions)	the beginning of an			instructions
		instruction block.
	Intermediate	Between a logical start	Required.		AND, OR, AND >, and
	instructions	and the output instruc-			other symbol compari-
		tion.			son instructions)
Output instructions		Connected directly to	Required.		Most instructions
		the right bus bar.			including OUT and
					MOV(021).
			Not required.		END(001), JME(005),
					ILC(003), etc.

Note (1) There is another group of instructions that executes a series of mnemonic instructions based on a single input. These are called block programming instructions. Refer to the Instructions Reference Manual (Cat. No. O011) for details on these block programs.

(2)If an instruction requiring an input condition is connected directly to the left bus bar without a logical start instruction, a program error will occur when checking the program on the CX-Programmer.

Addressing I/O Memory Areas

Bit Addresses

@@@@.@@

Bit number (00 to 15)

Word address

Example: The address of bit 03 in word 0001 in the CIO Area would be as shown below. This address is given as “CIO 0001.03” in this manual.

0001. 03

Bit number (03)

Word address: 0001

Bit: CIO 0001.03

Word

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

0000

0001

0002

Word Addresses

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Word address

Example: The address of bits 00 to 15 in word 0010 in the CIO Area would be as shown below. This address is given as “CIO 0010” in this manual.

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