RFID Communications
6.4.23 ABxS Command 96H: SN Write
DESCRIPTION
Command 96H writes data to a single RFID tag specified by its serial number.
DISCUSSION
This command writes segments of data to contiguous areas of tag memory. It is capable of transferring up to 1 kByte of data transferred from the host to the controller in a single command. The timeout value is given in 1 ms increments and can have a value of 001EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller returns a syntax error.
The SN Write consists of a Family ID, start address, and Serial Number followed by the data stream to be written to the RFID tag. If the write range exceeds the last tag address, the controller returns a syntax error, 21H. It returns a response when done, or when the timeout expires.
The data to be written to the tag is contained in the LSB of the register, and the MSB is always 00H.
Field | Remarks |
Command | Command number in hex preceded by AAH |
|
|
Family ID | Tag Family ID - 00H = all tags |
|
|
Reserved | 00H |
|
|
Start Address | Tag address where the write will start |
|
|
Number of Bytes | Number of tag addresses to be written to |
|
|
Timeout | Timeout value given in 1 ms units (001EH - FFFEH) |
|
|
Tag Serial Number | The |
|
|
Write Data | Data to be written (1 byte to 1 kByte) |
|
|
Message Terminator | FFFFH |
|
|
LRP2000 Passive Reader/Writer | 86 |
