SAMSys MP9311 Series, User Manual

Page: 52 / 60

MP9311 User’s Guide
44
Writing a Kill Code and User Data
Kill codes and user data can be written to any tag in the field in the same manner as the
EPC code method described above, but typically a kill code and user data would be
associated with a specific EPC code. Once written, you cannot read back the kill code.
To write a Kill Code, enter the following:
}Wa,a:0,b:112233,l:3!
To write to a specific tag, enter the EPC code as the d: parameter. The following write
command would write the Kill code and singulates using ID2, so PE0 singulation bits are
ignored:
}Wt,a:0,d:220000000000000000000003,b:112233,l:3!
Writing User Data
To write user data to Page 3 on any tag, enter the following(overwrites any current data):
}wa,a:3,d:112233445566778899AABBCC,l:c!
To write user data to page 3 of a specific tag, enter the EPC code as the
d:
parameter
(singulates using ID2, so PE0 singulation bits ignored):
}Wt,a:3,d:30112233445566778899aabb,b:00112233445566778899
aabbcc,l:d!
Tag Erase
To erase a Matrics 0+ tag, use the Tag Erase Te command. Only one tag should be in the
field when executing this command. All memory pages are filled with 0’s and a 16-bit
CRC is appended.
After erasing, the EPC code page will be filled with 0’s. Also, the user data page will have
all 0’s with a 16 bit CRC appended at the end. This allows the user data page to be read
with the
Ra command. However, the EPC code page will return an error on Ra , since
there is no valid CRC. If any page is locked, then the Te command will fail and none of the
pages will be erased.
To erase a tag, enter the following:
}Te!