Omron V680-CA5D01-V2 User Manual page 114

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
Command code
UID
× × × × ... ×
2 0 or 16
1:N Protocol
Controller No. Command code
× × × ×
@ 0
1 1 2 2
The shaded portion is added for the 1:N protocol.
The Controller No. is given as a decimal number between 00 and 31.
Name
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.
Data
× × × ... × ×
n
UID
× × ... × × ×
0 or 16
FCS calculation range
Terminator
*
CR
2
Data
FCS
× ... × × × ×
n 2
Description
SECTION 5
Communications
Terminator
*
CR
2
RFID System
User's Manual
111