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Electromagnetic Inductive RFID System
User's Manual
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SECTION 4
Commands
Command Response Format
Command Frames
Response Frames
Name
Description
Command code
Specifies the command.
Data
Specifies the parameters for command execution (address, number of bytes, etc.) or specifies the data to
be written.
Terminator
Indicates the end of a command, using the two characters “*” ($2A) and the carriage return code ($0D).
Name
Description
Command code
The same data as the sent command frame is added and returned.
End code
Shows the command execution result.
Retry flag
Always 0.
Status flag
A code that shows the status of command execution.
0
Normal
Indicates that the processing was completed normally.
1
Tag data status
Indicates that the verification result of the Memory Check command (MD)
detected an error, or that an overflow/underflow occurred in the calculation of a
Computation Write command (CW).
2
Abort status
Indicates a communication with a Tag was aborted after it was started, using
the aborting command (AA).
Data
Provides the data read according to the command.
Terminator
Indicates the end of a command, using the two characters “*” ($2A) and the carriage return code ($0D).
CR
㧖
2
n
2
Command code
Data Terminator
㧖
CR
2
n
2
1
2
1
Command code
Data
Terminator
Retry flag
End code
Status
flag