Omron CS1W-ETN21 operation manual Parameters, Communications Type, Cio

Socket Applications							Section 7-2
Parameters				Specifies the parameters for the command code. Parameters depend on the
				command being executed; for details, refer to the following pages.
7-2-2	PLC Memory Areas
				The memory areas of the PLC that can be specified for results storage when
				executing commands from the PC are listed in the table below. The Variable
				type is set in the first byte of the results storage area. The remaining three
				bytes contain the address for communications.
				Addresses in the Addresses for communications column are not the same as
				the actual memory addresses.
Memory		Data type			Word addresses	Addresses for	Variable	Bytes
area						communications	type
Bit Areas	Current		CIO		CIO 0000 to CIO 6143	000000 to 17FF00	B0 (80)*	2
	value of
			HR		H000 to H511	000000 to 01FF00	B2
	word
			A		A448 to A959	01C000 to 03BF00	B3
DM Area			DM		D00000 to D32767	000000 to 7FFF00	82	2
EM Area			Bank 0		E0_E00000 to E0_E32767	000000 to 7FFF00	A0 (90)*	2
			Bank 1		E1_E00000 to E1_E32767	000000 to 7FFF00	A1 (91)*
			Bank 2		E2_E00000 to E2_E32767	000000 to 7FFF00	A2 (92)*
			Bank 3		E3_E00000 to E3_E32767	000000 to 7FFF00	A3 (93)*
			Bank 4		E4_E00000 to E4_E32767	000000 to 7FFF00	A4 (94)*
			Bank 5		E5_E00000 to E5_E32767	000000 to 7FFF00	A5 (95)*
			Bank 6		E6_E00000 to E6_E32767	000000 to 7FFF00	A6 (96)*
			Bank 7		E7_E00000 to E7_E32767	000000 to 7FFF00	A7 (97)*
			Bank 8		E8_E00000 to E8_E32767	000000 to 7FFF00	A8	2
			Bank 9		E9_E00000 to E9_E32767	000000 to 7FFF00	A9	2
			Bank A		EA_E00000 to EA_E32767	000000 to 7FFF00	AA	2
			Bank B		EB_E00000 to EB_E32767	000000 to 7FFF00	AB	2
			Bank C		EC_E00000 to EC_E32767	000000 to 7FFF00	AC	2
			Current bank		E00000 to E32767	000000 to 7FFF00	98	2

Note The variable types (area designations) given in parentheses can also be used, allowing CV-series or CVM1 programs to be more easily corrected for use with CS/CJ-series PLCs.

Word and Bit Addresses Three bytes of data are used to express data memory addresses of PLCs. The most significant two bytes give the word address and the least significant byte gives the bit number between 00 and 15.

The word address combined with the bit number expresses the bit address. The bit number is always 00 because Ethernet Units can handle only word data, i.e., individual bits cannot be addressed.

Specifies the bit position between 00 and 0F (0 to 15) for bit data.

Specifies the address of the corresponding word.

Variable type

Word addresses for specific memory area words can be calculated by con- verting the normal decimal word address to hexadecimal and adding it to the first word in the Addresses for communications column in the above table. For example, the address for communications for D00200 would be 0000 (from above table) plus C8 (decimal 200 converted to hexadecimal), or 00C8.

158