Omron CS1W-SCU21 Operation Manual page 476

V600/V620 ID Controller Protocol
Note Data for Data Carriers designated for hexadecimal is stored beginning with the largest offset from the
receive data words, as shown in the following diagram.
Read (Hex/2) (Sequence No. 505 (Hex 01F9))
This sequence is used when the maximum number of Heads to be read from the Carrier is 2. Up to 60 bytes of
data can be read for each Read/Write Head.
Send Data Word Allocation (3rd Operand of PMCR(260))
First word of send
data
Offset Contents (data format)
+0 Number of receive data
words (4 digits Hex)
+1 to +61 Read data (Hex)
Data Carrier
+0
+1
+2
Each byte (address) in the Data
Carrier contains 2 digits.
+0
Number of send data words
+1
Number of Heads
+2
(Undefined)
+3
(Undefined)
+4
Leading address No.
+5
(Undefined)
Read bytes
+6
(Undefined)
+7 (Undefined)
+8 Leading address No.
(Undefined)
+9
Read bytes
Offset Contents (data format)
+0 Number of send data words
(4 digits Hex)
+1 Number of Heads
(4 digits BCD)
+(4(N–1)+2) Unit No. (2 digits BCD)
+(4(N–1)+3) R/W Head CH No.
(1 digit BCD)
+(4(N–1)+4) Leading address No.
(4 digits Hex)
+(4(N–1)+5) Read bytes
(2 digits Hex)
N: Number of Heads
0002 to 003E (6 to 62 decimal)
Number of read bytes stored in hexadecimal
data
Receive data storage words
+0
Example for 6 bytes
+1
Unit No.
Head CH No.
CH 1
Unit No.
Head CH No.
CH 2
0006 to 000A (6 to 10 decimal)
0001 to 0002
Arbitrary (However, there is a limit for the max-
imum Unit No. depending on the model)
R/W Head CH 1 designation: 1
R/W Head CH 2 designation: 2
The CD1D must be set to 1.
0000 to FFFF
01 to 3C (1 to 60 bytes)
Appendix M
Data
Data
457