Auto Read (Ar) - Omron V600-CD1D-V2 Operation Manual

Types of Commands and Responses

4-4-5 Auto Read (AR)

Command Format
Read A
Header
ASCII/HEX code specification
A: ASCII code, JIS 8 code
H: HEX code
R/W Head No. specification
(fixed to 1)
Response Format
Auto Read
Header
4. If the HEX code is specified, the number of write data characters in each
frame must be even. If it is odd, a command input error occurs.
5. Divide the frame so that the last frame is not AA∗CR or XZ∗CR.
Frame 1 Header
A/H
Frame 2
:
Frame
(n–1)
Frame n
(Communication procedure)
(Command 1)
Host XR
ID Controller CR
(Delimiter)
Reads data when the Data Carrier has approached. The ID Controller responds
when the lower communication has ended.
R A/H 1 X X
A R O O X
End code
00: Normal completion
1 frame = 266 characters
1 First address Write data 1
Write data 2
:
Write data (n–1)
Write data n
(Command 2) (Command n–1) (Command n)
CR
...
CR CR
(Delimiter) (Delimiter) (Delimiter)
∗
X X X X
Specify the number of bytes to be read in
HEX code. The number of bytes that can
be read at a time is as follows:
ASCII: 256 bytes (256 characters)
HEX: 128 bytes (256 characters)
First address No. specification range
0000-07FF (2KB type)
0000-1FFF (8KB type)
X X X
Read data (on normal completion only)
Section
CR
CR
CR
*CR
CR
(Response)
∗
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