88
Section 5 Communications Commands
RFID System
Operation Manual
Section 5
Communications
■ 1:N Communications
Less than 246 Characters in Read Data
More Than 245 Characters in Read Data
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 four-digit hexadecimal
number. Up to 2048 bytes can be read with one command.
Specifiable range: 0001H to 0800H
• ASCII specification: 2048 bytes (2048 characters)
• Hexadecimal code specification: 2048 bytes (4096 characters)
End code Indicates the results of command execution.
An end code of 00 is returned for a normal end.
Refer to End Codes for more information.
p.135
Read data The data read from Data Carrier memory.
The number of characters will be the same as the number of read bytes for ASCII data and twice the
number of read bytes for hexadecimal data.
xx
Command
code
x
R
xx
A/H 1/2
xx
211 4
4
No. of read bytes
2
*CR
Terminator
xxxx
2
FCS
3
Controller No.
x
@
x
Data code
specifica-
tion
Read area start address
R/W Head No.
x
x
R
x
00
xx
22 n
2
*CR
xx
2
FC S
3
x
@
x
Controller No.
Command
code
End code
Read data
Terminator
:
Frame 1
Frame 2
Frame
n-1
Frame n
1 frame = 256 characters max.
XR
CR
CR
CR
*CR
00
Read data 1
Read data 2
Read data n-1
Read data n
:
@Controller No.
FCS
@Controller No.
FCS
@Controller No.
FCS
@Controller No.
FCS
ASCII: 245 characters,
Hexadecimal code: 244 characters
A/H 1/2XR
FCS
@Controller No.
Start address No. of read bytes
CR
*CR
FCS
@Controller No.
CR
FCS
@Controller No.
CR
FCS
@Controller No.
CR
FCS
@Controller No.
ASCII: 249 characters,
Hexadecimal code: 248 characters
ASCII: 249 characters or less,
Hexadecimal code: 248 characters or less