Tag Writing Tips - Motorola XR450 - RFID Reader - Contactless Integration Manual

3 - 16 XR Series RFID Readers Integrator Guide
Tag Id - The data is written to the EPC bank from second word location and the PC field is updated accordingly for Gen2
tags. The data is written to tag id field of legacy tag.
Kill Password - If the data length is 4 bytes, it is written to kill password field of Gen2 and 3bytes (stripping the last byte
from the 4 bytes) kill password will be written in to Class 0+ tags.
If data length is 3 bytes, it is written to the kill password field of only Class0+ tag.
Access Password - The data is written to access password field of Gen2 tags.
Only one Memory bank or field can be written in one operation.
The following operation selections, can be performed simultaneously in Kill Password, Access Password, Tag
8.
Id, TID and User Data fields.
Unlock - Unlocks the selected Gen2 tag fields (kill password, tag id etc.).
Lock - Locks the selected Gen2 tag fields (kill password, tag id etc.). Tag Id, User Data and TID are locked for write, and
Kill Password and Access Password is locked for both read and write. The locked tags can be accessed in secured mode
(with access password).
The lock operation is performed on Tag Id, User Data and kill password of Class0+ tag. The class0+ tags can not be
unlocked.
Permanent-Unlock - Similar to Unlock but permanently unlocked Gen2 tags can not be locked again.
Permanent -Lock - Similar to Lock but permanently locked Gen2 tags can not be unlocked again.

Tag Writing Tips

Before writing to tags consider the following tips:
•
The write and lock can be performed simultaneously.
•
The operations performed affect only the first visible selected legacy tag and all selected Gen2 tags.
•
To write kill password to a Class 1 Tag: Confirm that the Class 1 Air protocol is enabled and Class0 and Gen2
are disabled in the read point class. Provide the 3 bytes kill password in the Data to Write Column.
Figure 3-17
NOTE Due to regulatory restrictions the reader may not be able to write to many tags at once when 512 bits are
written in to the user memory area. While performing write onto 512 bit user memory, it is advised to write
in smaller chunks of memory instead of writing 512 bits at once.