RFID Communications
Example
This example waits until a tag is in range and then reads the
Command from Host
Field | Content |
Header | 0202H |
|
|
Command Size | 0003H |
|
|
Command Code | 07H |
|
|
Timeout | 07D0H |
|
|
Checksum | 1EH |
|
|
Terminators | 03H |
|
|
Response from Controller
Field | Content |
Header | 0202H |
|
|
Response Size | 0009H |
|
|
Command Echo | 07H |
|
|
First ID Byte | F2H |
|
|
Second ID Byte | 72H |
|
|
Third ID Byte | 03H |
|
|
Fourth ID Byte | 00H |
|
|
Fifth ID Byte | 00H |
|
|
Sixth ID Byte | 01H |
|
|
Seventh ID Byte | 04H |
|
|
Eighth ID Byte | E0H |
|
|
Checksum | A3H |
|
|
Terminators | 03H |
|
|
6.5.5 ABxF Command 08H: Tag Search
DESCRIPTION
Command 08H checks for an RFID tag in the controller field.
DISCUSSION
This command activates the controller to “look” for a tag in the RF field. If the controller finds a tag, it returns a command echo to the host. If no tag is present, it returns an error message. Even though this command is grouped with single tag commands, the presence of multiple tags within range of the antenna will not cause errors. See Section 6.6 for information on the error messages.
Field | Content |
Header | 0202H |
|
|
Command Size | Packet length in bytes excluding the header, command size, checksum, and terminator bytes. 0003H |
| for this command |
|
|
Command | 08H |
|
|
Timeout | |
|
|
Checksum | Optional checksum |
|
|
Terminator | 03H |
|
|
LRP2000 Passive Reader/Writer | 96 |