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5-6 Communication Command
5-13
5-6-4 Data Fill (DF)
Write 1 or 2 bytes of the same data into an area specified by the first address and the last address of tag memory. Written data is speci-
fied by a hexadecimal code.
Example: Writing a fixed data ("00FF") from the address 0000h to 007Fh
(Single trigger, writing 2 bytes)
Sent data: DFSTW 1 0 0 0 0 0 0 7 F 0 0 F F * [CR]
Received data: DF 0 0 0 0 * [CR]
Communication designation
Specifies how to communicate with a tag. For details, refer to the communication desig-
nation list.
Data designation
Specifies a unit of written data.
"B": Byte
"W": Word (2 bytes)
Antenna designation
Fixed to "1".
First address of written area
Specifies the address to write a data into a tag in four hexadecimal digits.
Available designation range: 0000h to 007Fh.
Last address of written area
Specifies the last address to write a data into a tag in four hexadecimal digits.
Available designation range: 0000h to 007Fh.
Written data
Data written into a tag. Specify 1 or 2 bytes of hexadecimal code.
Correct Usage
When you write a fixed data into a specified area, this command can reduce the traffic to a host device and, therefore,
the system can be operated fast by this command.
<Command>
Command
code
"DF"
Communication
designation
Data
desig-
nation
Antenna
designa-
tion
The first address of written area
Written data
1/2 byte
The last address of written area
<Response>
Command
code
"DF"
Termination
code
"00"
Retrans-
mission
flag
Status
flag
Содержание V670-H11
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