MP9311 User’s Guide
34
In addition to the Wa, Te, and Tr commands, SAMSys readers also support the following
EPC1 operations:
•
Lb
Lock Block
•
Yl
Query Lock Status (returns
f:0
for unlocked or
f:1
for locked)
•
Td
Tag Destroy
The Lock Block and Query Lock Status operations can only be performed with a single
tag in the RF field and do not require any parameters. The Tag Destroy operation requires
the
b:
parameter to specify the particular kill passcode for this tag.
For detailed information on these and other tag commands, refer to the
Comprehensive
Heuristic Unified Messaging Protocol (CHUMP) Reference Guide.
Using the Wv Command
The Wv command is a multifunction command that performs any erase, write, and
verification needed to program a tag in a specific protocol. The command can also lock the
data.
The format of the
Wv
command is as follows:
}Wv,b:<EPC data>,m:<lock mask>,k:<kill code>
where:
b:<EPC data>
is the EPC ID to write to the tag.
k:<kill code>
is the kill code to be written to the reader.
m:<lock mask>
is the lock mask to indicate which tag field to lock. Each 4-bit
nibble in the mask indicates the lock state to apply to a specific part of the tag. A mask
nibble value of 1 locks the specific part of the tag. A mask nibble value of 0 indicates
no lock is applied.
Fo
r th
e EPC1 protocol, the mask nibbles apply to the following fields:
To write an EPC ID value of 332233445566778899aabbcc and verify the write, enter:
}wv,b:332233445566778899aabbcc!
To write the EPC ID data and lock the data, enter:
}wv,b:332233445566778899aabbcc,m:1!
Mask Nibble
4
3
2
1
0
Tag Field
Unused
Unused
Unused
Kill code
EPC data
Summary of Contents for MP9311 Series
Page 1: ...User s Guide MP9311 Low Power UHF Reader Module THE POWER TO CHOOSE...
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Page 34: ...MP9311 User s Guide 26...
Page 58: ...MP9311 User s Guide 50...
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