Auto Write (Aw); Polling Auto Read (Pr) - Omron V600-CD1D-V2 Operation Manual

Types of Commands and Responses

4-4-6 Auto Write (AW)

Command Format
Auto write 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

4-4-7 Polling Auto Read (PR)

Command Format
Polling auto
P
read
Header
ASCII/HEX code specification
A: ASCII code, JIS 8 code
H: HEX code
R/W Head No. specification
(fixed to 1)
Response Format
40
Writes data when the Data Carrier has approached. The ID Controller responds
when the lower communication has ended.
1 frame = 266 characters max.
W A/H 1 X X
Auto write
Header
When the host computer transmits the polling auto command, the ID Controller
immediately responds, indicating the reception of the command. After this, the
ID Controller reads data when the Data Carrier approaches. Meanwhile, the
host computer can make an inquiry on the result of the command processing by
using a subcommand.
R A/H 1 X X
Polling auto
read
Header
X X X X X
Specify the number of bytes to be written.
The number of bytes that can be read at a time is as follows:
ASCII: 256 characters (256 bytes)
HEX: 256 characters (128 bytes)
First address No. specification range
0000-07FF (2KB type)
0000-1FFF (8KB type)
Note: Addresses 0000 and 0001 cannot be written as these
are a production date area.
∗
A W 0 0
End code
00: Normal completion
∗
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)
∗
P R 7 4
End code
74: Command received
Note: In this case, the end code is ei-
ther 74 or host communication error.
Section 4-4
∗
X