
Application Tag Commands
Command Set 125
FastLoadImage Command Fields
An example FastLoadImage single tag command is:.
The response to the FastLoadImage command is an ACK with the written EPC data. The
Field Value Description
Length 0x1E Number of bytes in the command following the OpCode.
OpCode 0x2D Gen2 Tag Specific Command.
Time Out [2 bytes] Command timeout in milliseconds.
Chip Type 0x05 Alien Higgs3.
Tag Singulation
Fields | Select
Option
[1 byte] • bit 6 (x1xx xxxx | 0x40) must be set, indicating a 2-byte sub
command follows this byte, and before the remaining
Tag
Singulation Fields
Sub Command 0x0001 FastLoadImage
Tag Singulation
Fields | Select
[Address, Data
Length, Data]
[n bytes]
The remaining fields from the
Tag Singulation Fields
Note: Optional depending on the value of Select Option.
Current Access
Password
[4 bytes] The Access Password for the tag. If Access Password is currently set
and the tag locked, the Access Password must be passed to allow
writing.
Kill Password [4 bytes] The new Kill Password to be written to Reserved Memory
New Access
Password
[4 bytes] The new Access Password to be written to Reserved Memory
PC Word [2 bytes] The value of the PC Word to be written to EPC Memory
EPC Data [12 bytes]
The 96 bit EPC value to be written to the tag.
FF 25 2D 03 E8 05 44 00 01 00 00 00 20 10 11 22
SOH Length OpCode Timeout (ms) Chip
Type
Option Sub
Cmd
Select Data Address Select
Length
Selct
Data
11 11 22 22 00 00 00 00 11 22 33 44 XX XX (12 bytes) ?? ??
Current Access Pwd Kill Password New Access Password PC Word EPC Data CRC
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