User's Manual

Tag Programming
35
UCODE Programming
Writing multiple bytes anywhere in the first eight bytes of a UCODE tag requires
the use of the Wa command. Only a single tag should be present in the RF field for
a Wa operation. The Wa command can be used to modify any byte in the tag.
For single byte write operations, use the Wt command.
The ISO18000-6B UCODE tag can emulate a 96- or 64-bit EPC ID tag by writing
data to multiple locations in the tag and enabling the appropriate mode in the
reader. This capability is more fully described in the Implementation of EPC Tag
Data on UCODE EPC 1.19 Application Note from Philips Semiconductor. For
detailed information on reader configuration for this tag, refer to the P6B
Configuration Register description in the SAMSys Comprehensive Heuristic
Unified Messaging Protocol (CHUMP) Reference Guide.
To configure a UCODE tag for a 96-bit EPC ID of
3114F4DA34B2D05E01010101, send a Tag Reset Tr command followed by
a Read Detect Rd command. Then issue the Wa commands:
}Tr!
}Rd!
}wa,a:2,b:315E01010101,l:6!
}wa,a:10,b:14F4Da34B2D0,l:6!
To configure a UCODE tag for a 64-bit EPC ID of 4066771122334455, send a
Tag Reset Tr command followed by a Read Detect Rd command. Then issue the
Wa commands:
}Tr!
}Rd!
}wa,a:2,b:401122334455,l:6!
}wa,a:10,b:6677,l:2!