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RFID System
User’s Manual
SECTION 5
V680 Commands
SECTION 5
Communications
Command and Response Formats
This section describes the formats of the commands sent from the host device to the ID Controller and
the responses returned by the ID Controller to the host device.
Command Frame
1:1 Protocol
1:N Protocol
The shaded portion is added for the 1:N protocol.
The Controller No. is given as a decimal number between 00 and 31.
Name Description
Controller No. When using 1:N protocol, the Controller number (00 to 31) is added after the @ mark and the 0. (In decimal)
Command code A code that specifies the command to be executed.
UID A unique identifier used to identify Tags.
Data Data that specifies parameters for command execution (e.g., addresses or number of bytes), write data, etc.
FCS Horizontal parity check data that is added when using 1:N protocol.
Terminator Indicates the end of the command.
×× ×× ××
...
* CR
2
n
2
UID
×× ××
...
0 or 16
Command code
Data
Terminator
×× ×× ××
...
* CR
2
n
2
@0 ××
FCS
××
2
1
2
1
UID
×× ××
...
0 or 16
Command code
Data
Terminator
Controller No.
FCS calculation range
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