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Types of Commands and Responses
Response Format
4-4-2 Write (WT)
Command Format
Write
W
T
Header
ASCII/HEX code specification
A: ASCII code, JIS 8 code
H: HEX code
R/W Head No. specification (fixed to 1)
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.
Response Format
4-4-3 Expansion Read Command (XR)
Command Format
X
Header
ASCII/HEX code specification
R/W Head No. specification
(fixed to 1)
Read
R
Header
Note If the Data Carrier is missing, "RD72" is returned.
Writes data to the Data Carrier. If the Data Carrier is missing, an error response
(end code: 72 = Data Carrier missing) is returned.
1 frame = 266 characters max.
A/H
1
X
X
X
Write
W
Header
Note If the Data Carrier is missing, "WT72" is returned.
Performs batch read processing of up to 2 KB. The processing procedure to the
DC is the same as that of the read command.
R
H/A
1
X
X
First address
specification
(0000-FFFF)
D
0
0
X
X
End code
00: Normal completion
X
X
X
X
Specify the number of bytes to be writ-
ten. The number of bytes that can be
read at a time is as follows:
ASCII: 256 characters (256 bytes)
HEX: 256 characters (128 bytes)
∗
T
0
0
End code
00: Normal completion
X
X
X
X
X
No. of bytes read
Section
∗
∗
X
X
Read data
∗
X
∗
X
CR
Terminator
4-4
37
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