Omron V600 User Manual page 76

Section 3
Commands
EXPANSION BATCH READ (rd)
This command reads up to 2 Kbytes of data from the Data Carrier in a batch. If the Data Carrier is not
in communications range, an error response (end code: 72 = Data Carrier non-existent) will be
returned.
Command
Command
Data
setting
code
r d A/H
2 1
Data setting
Processing area number
setting
Read area start address
Number of read bytes
Response
Command
code
End code
r d 0
2
End code
Read data
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User's Manual
Processing
area
Read area
number
start address
setting
× × × × ×
1
1 4
Sets the code format used to send responses for read data.
A: ASCII
H: Hexadecimal code
Always 1.
Specifies the start address of the area in the Data Carrier to be read from in 4-digit hexadecimal
code.
Setting range: 0000h to 1FFFh
Specifies the number of bytes to be read from the Data Carrier in 4-digit hexadecimal.
The maximum number of bytes that can be read at one time is 2,048 bytes.
Setting range: 0001h to 0800h
•ASCII: 2,048 bytes (2,048 characters)
•Hexadecimal code: 2,048 bytes (4,096 characters)
Read data
× × × ×
0
2 n
Indicates the execution result for the command.
The end code 00 indicates normal completion.
For details on end codes, refer to End code List.
p.95
Indicates the data read from the Data Carrier.
The characters in ASCII indicate the number of read bytes and the characters in hexadecimal code
indicate the number of read bytes x 2.
Number of
Terminator
read bytes
× × ×
CR
4 2
Terminator
CR
2