47
Electromagnetic Inductive RFID System
User's Manual
S
E
CTI
O
N 4
Communic
a
tio
n
s
Comma
nds
SECTION 4
Commands
Data Fill (DF)
Writes one or two bytes of the same data to a specified Tag area. The write data is specified in hexa-
decimal.
Example: Writing Fill Data “00FF” from Address 0000h to 0007Fh (Single Auto, Writing 2 Bytes)
Send data:
DFSAW10000007F00FF
*
[CR]
Receive data: DF0000
*
[CR]
The volume of data communications with the Handy Terminal can be reduced by writing fill data to a specified area, so
the use of this command can improve the efficiency of the system.
Communications
designation
Specifies the method for communicating with a Tag.
Refer to
for details.
Data designation
Specifies the size of the write data.
“B”: Bytes
“W”: Words (2 bytes)
Antenna designation
Always “1”.
Write area start address
The address in the Tag for writing data is specified in four hexadecimal digits.
Specification range: 0000h to 007Fh
Write area end address
The end address in the Tag for writing data is specified in four hexadecimal digits.
Specification range: 0000h to 007Fh
Write data
Data written to Tags.
Set one byte of hexadecimal if “B” is specified under Data designation, two bytes if “W” is
specified.
2
2
1
1
4
4
2
㧖
CR
Command
code "DF"
Data
desig-
na-
tion
Antenna
designa-
tion
Write area
start address
Communica-
tions desig-
nation
Write area
end address
Write data
1 or 2 bytes
worth of data
Command
2
2
1
1
2
㧖
CR
Command
code "DF"
Retry
flag
Status
flag
End code
"00"
Response
Summary of Contents for V670-CF01
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