82
Se
ct
io
n 5
Communica
tions
Comma
nds
RFID System
Operation Manual
Section 5
Communications
Communications Commands
The commands used to perform communications with Data Carriers are described in this section.
READ (RD)
For READ the ID Controller reads data from Data Carrier memory. If there is no Data Carrier in the
communications area, an error response with an error code of 72 (Data Carrier missing) will be
returned.
■
1:1 Communications
Data code specification
Specifies the type of code in which to send the read data in the response.
A: ASCII
H: Hexadecimal
R/W Head No.
Specifies the Read/Write Head with which to communicate.
1: Read/Write Head 1
2: Read/Write Head 2
Read area start address
Specifies the first address from which to read data from the Data Carrier as a four-digit hexadeci-
mal number.
Specifiable range: 0000H to FFFFH
No. of read bytes
Specifies the number of bytes of data to read from the Data Carrier as a two-digit hexadecimal
number. Up to 256 bytes can be read with one command.
Specifiable range: 00H to FFH (The maximum of 256 bytes will be read if 00H is specified.)
• ASCII specification: 256 bytes (256 characters)
• Hexadecimal code specification: 256 bytes (512 characters)
End code
Indicates the results of command execution. An end code of 00 is returned for a normal end.
Refer to
for more information.
Read data
The data read from Data Carrier memory. The number of characters will be the same as the num-
ber of read bytes for ASCII data and twice the number of read bytes for hexadecimal data.
x
x
Command code
R
D
x
x
A/H
1/2
x
x
No. of read
bytes
2
1
1
4
2
2
*
CR
Terminator
Read area start address
Data
code speci-
fication
R/W Head No.
Command
Response
Command code
R
D
x
0
0
x
x
2
2
n
2
*
CR
Terminator
Read data
End code
x
Summary of Contents for V600 Series
Page 50: ...48 Section 2 Wiring RFID System Operation Manual Section 2 Installation and Wiring MEMO ...
Page 72: ...70 Section 4 Write Command Memory RFID System Operation Manual Section 4 Function ...
Page 138: ...136 Section 5 End Codes RFID System Operation Manual Section 5 Communications MEMO ...