Omron CQM1H-SCB41 operation manual Read ASCII/4 Sequence No

V600/V620 ID Controller Protocol Appendix M

Read (ASCII/4) (Sequence No. 502)

This sequence is used when the maximum number of Heads to be read from the Carrier is 4. Up to 48 bytes of data can be read for each Read/Write Head.

Send Data Word Allocation (2nd Operand of PMCR)

First word of send +0

data+1

+2

+3

+4

+5

+6

+7

+8

+9

~

+14

+15

+16

+17

Number of send data words

Number of Heads

(Undefined)			Unit No.
(Undefined)			Head CH No.
Leading address No.
(Undefined)
		Read bytes
(Undefined)			Unit No.
(Undefined)			Head CH No.
Leading address No.
(Undefined)		Read bytes
	~
(Undefined)			Unit No.
(Undefined)			Head CH No.
Leading address No.
(Undefined)
		Read bytes

CH 1

CH 2

4 CH

Offset	Contents (data format)	Data
+0	Number of send data words	0006 to 0018
	(4 digits BCD)
+1	Number of Heads	0001 to 0004
	(4 digits BCD)
+(4(N–1)+2)	Unit No. (2 digits BCD)	Arbitrary (However, there is a limit for the
		maximum Unit No. depending on the model)
+(4(N–1)+3)	R/W Head CH No.	R/W Head CH 1 designation: 1
	(1 digit BCD)	R/W Head CH 2 designation: 2
		The CD1D must be set to 1.
+(4(N–1)+4)	Leading address No.	0000 to FFFF
	(4 digits Hexadecimal)
+(4(N–1)+5)	Read bytes	01 to 30 (1 to 48 bytes)
	(2 digits Hexadecimal)

N: Number of Heads

Receive Data Word Allocation (3rd Operand of PMCR)

Receive data	+0	Number of receive data words
storage words
	+1	Read data
	~	~
	+24	Read data
	+25	Read data
	~	~
	+48	Read data
	~	~
	+73	Read data
	~	~
	+96	Read data

CH 1

CH 2

4 CH

376