Omron SYSMAC CJ1W-SCU21-V1, Руководство по эксплуатации

Страница: 730 / 781

701
V600/V620 ID Controller Protocol Appendix P
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))
Offset Contents (data format) Data
+0 Number of receive data
words (4 digits Hex) 0002 to 003E (6 to 62 decimal)
+1 to +61 Read data (Hex) Number of read bytes stored in hexadecimal
data
Offset Contents (data format) Data
+0 Number of send data words
(4 digits Hex) 0006 to 000A (6 to 10 decimal)
+1 Number of Heads
(4 digits BCD) 0001 to 0002
+(4(N–1)+2) Unit No. (2 digits BCD) Arbitrary (However, there is a limit for the max-
imum Unit No. depending on the model)
+(4(N–1)+3) R/W Head CH No.
(1 digit BCD) R/W Head CH 1 designation: 1
R/W Head CH 2 designation: 2
The CD1D must be set to 1.
+(4(N–1)+4) Leading address No.
(4 digits Hex) 0000 to FFFF
+(4(N–1)+5) Read bytes
(2 digits Hex) 01 to 3C (1 to 60 bytes)
N: Number of Heads
Data Carrier
Receive data storage words
Example for 6 bytes
Each byte (address) in the Data
Carrier contains 2 digits.
+0
+1
+2
+0
+1
First word of send
data
Number of Heads
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
(Undefined)
Unit No.
(Undefined)
Head CH No.
Leading address No.
(Undefined)
Read bytes
CH 1
CH 2
Number of send data words
(Undefined)
Unit No.
(Undefined) Head CH No.
Leading address No.
(Undefined)
Read bytes