Omron CJ1W-CLK21-V1 Specified for CQM1H-series PLCs, Word/Bit Addresses, Memory Area Code

Commands and Responses for C200HX/HG/HE and CQM1H-series PLCs							Section 6-6
Memory area	Data	Data area address	Address used in				Memory	No. of
			communications				area code	bytes
			1st and 2nd		3rd byte
			bytes
DM Area	Word contents	DM 0000 to DM 6655	0000 to 19FF		00 to 00		82	2
Expansion DM	Word contents	EM 0000 to EM 6143	0000 to 17FF		00 to 00		90 to 97, 98,	2
							and A8 to
							AF (See
							note.)
	Note	The meanings of the memory area codes for the Expansion DM area are
		shown in the following table. Only the current bank (98) or bank 0 (90) can be
		specified for CQM1H-series PLCs.
		Memory area code				Meaning
		90 to 97		Banks 0 to 7
		98		Current bank
		A8 to AF		Banks 8 to 15
		Memory area size varies depending on the PLC model. For details, refer to
		the operation manual of the specific PLC that is being used.
Word/Bit Addresses		Each word/bit address specifies a specific bit or word.

Specify the the bit between 00 and 0F (Hex) (decimal: 00 to 15). Set to 00 (Hex) to specify word or flag data.

Specify the address of the word or flag.

To obtain the corresponding address of the desired word or bit, add the data area word address (hexadecimal) to the first address of the range of addresses used for that data area in communications. For example, the address for word AR 13 is computed as follows:

	First address for AR area;							048C (Hex)
	048C + 0D (13 in BCD);							0499 (Hex)
	The word address for AR 13 would be 04990C (Hex) (the memory area code
	would specify this as a word) and the address of bit 12 (C Hex) in AR 13
	would be 04990C (Hex).
Memory Area Code	The unit of access (bit or word) and the data code are specified as shown in
	the following illustration.
	Bit	7	6	5	4	3	2	1	0

Access unit	Data code
00: Bit	00: CIO, LR, HR, or AR area
10: Word	01: Timer or Counter area
	02: Data Memory area
	10 to 17, 18, and 27 to F: Expansion DM

Number of Bytes/Element The number of bytes of read or write data per element is as follows depending on the access unit.

1 Byte/element for bit access

2 Bytes/element for word access

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