User's Manual

RFID TAG READER CHAPTER 3
ALH-901X USER’S GUIDE
DOC. CONTROL #8102117-000 REV D
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When locking, you have the option of locking the Access Password and Kill Password (both in the
Reserved bank) separately, so the Lock command has a list of tag memory fields instead of banks.
The other parameter is the type of lock: Lock, Unlock, PermaLock, and PermaUnlock. All locking
operations require you to confirm by clicking OK to an alert message. The “Perma” options are,
well, permanent, so use caution.
Locking a field doesn’t immediately protect it until you also write a non-zero Access Password to
the tag (and you should probably lock that field as well!). Please refer to the EPC Gen2 Protocol
Specification for complete details on how the various locking operations affect the tag’s behavior.
When locking, specify the field to
lock, and the lock type.
Confirm the lock operation.
PermaLock and PermaUnlock
cannot be undone!
As on the Basic Access tab, you have full access to
the tag Mask and current Access Password in this tab.
On this screen, the read operation failed because we
were trying to access it with an incorrect Access
Password.