130
SECTION 5
V680 Commands
RFID System
User’s Manual
SECTION 5
Communications
1:N Protocol
The communications designation for the Antenna that reads data is always single trigger (ST). The communications
designation specified in the command is used for the Antenna that writes data.
For a communications designation that specifies repeating, data writing will be repeated for other Tags after data is writ-
ten to the first Tag.
Note: When using the multi-access trigger communications designation (MT), the ID controller returns
an end code of 03 after communicating with all Tags.
Communications designa-
tion
Specifies the method of communications with the Tag.
Refer to Communications Designation Function for details on the communications designation.
p. 103
Data designation Always “H”.
Antenna designation Specifies the Antenna with which to communicate.
“1”: Reads from Antenna 1 and writes to Antenna 2.
“2”: Reads from Antenna 2 and writes to Antenna 1.
UID A unique identifier used to identify Tags.
Only in the case of the selective communications designation (SL), the UID of the Tag that is
being written to is added to the data.
Read area start address Specifies the start address of the area in the Tag from which data is to be read from in 4-digit
hexadecimal.
Setting range: 0000
H to FFFFH
No. of bytes to copy Specifies the number of bytes of data to copy in 4-digit hexadecimal.
Setting range: 0001
H to 0800H
Destination start address Specifies the start address of the area in the Tag to which data is to be written in 4-digit hexadec-
imal.
Setting range: 0000
H to FFFFH
UID A unique identifier used to identify Tags.
In the case of multi-access communications designations (MT/MR), the UID of the Tag that is
being written to is added to the data.
Read area start
address
No. of bytes to copy
Destination start
address
Command
code
Terminator
Antenna
designation
Controller No.
Communi-
cations
designation
Data
desig-
nation
CP
2
××
2
H
1
1/2
1
××××
4
××××
4
××××
4
×× ×× * CR
2
FCS
2
@
1
0
1
2
××
...
×
0 or 16
UID
×
Command
Response
Command
code
Terminator
End code
Antenna
desig-
nation
Resend flag
Controller No.
CP
2
××
2
×
1
0
1
×× * CR
2
@
1
0
1
2
FCS
××
2
××
...
×
0 or 16
UID
×
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