Omron SYSMAC CJ1W-SCU21-V1, Руководство по эксплуатации

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V600/V620 ID Controller Protocol Appendix P
Read (ASCII/1) (Sequence No. 500 (Hex 01F4))
This sequence is used when the number of Heads to be read from the Carrier is 1.
Send Data Word Allocation (3rd Operand of PMCR(260))
Receive Data Word Allocation (4th Operand of PMCR(260))
Note Data from Data Carriers designated for ASCII is stored beginning with the smallest offset from the
receive data words, as shown in the following diagram.
Offset Contents (data format) Data
+0 Number of send data words
(4 digits Hex) 0005 (fixed)
+1 Unit No. (2 digits BCD) 00 to 07 (CD1D)
00 to 15 (CA
@
A)
+2 R/W Head channel
(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.
+3 Leading address No.
(4 digits Hex) 0000 to FFFF
+4 Read bytes
(2 digits Hex) 01 to F4 (1 to 244 bytes)
Offset Contents (data format) Data
+0 Number of receive data
words (4 digits Hex) 0002 to 007B (2 to 123 decimal)
+1 to +122 Read data (ASCII) Number of read bytes stored in ASCII
First word of send
data Number of send data words +0
+1
+2
+3
+4
(Undefined) Unit No.
(Undefined) Head CH No.
Leading address No.
(Undefined) Read bytes
Receive data
storage words Number of receive data words
+0
+1
+2
+122
Read data
~ ~
Read data
Read data
Data Carrier
Receive data storage words
Example for 5 bytes
Each byte (address) in the Data
Carrier contains the code for one
ASCII character.
+0
+1
+2
+3
+4
+0
+1
+2