User's Manual

37
Write Data or ID (40)
Description: Writes data or ID to a tag at the specific bank (3.8, page 14) and the specific
address (3.9, page 16). After sending this command, the reader status will be “Starting
RF Power” and then “Writing” (3.6, page 10).
Type: Reader operation command.
Transmits from PC to PR110 UHF RFID READER:
Command Number (2
chars)
Parameter (2 – 64 chars) Carriage return,
<CR>(1char)
40
1122AABB
Or
11
<CR>
Where:
“40” is the command number.
“1122AABB” and “11” is the HEX data you want to write into the tag.
Note1: 1word = 2 bytes
1 word of ISO18000-6C (EPC Class1 Gen2) is 2 bytes. Therefore, when you want to
write data into an EPC C1 Gen2 tag, you must enter the parameter in the length of
2, 4, 6, 8 and so on.
Note2: Write ID Mode
When the reader is set Reading Bank (3.8, page 14) to “Read Multi EPC number
with anti-collision process”, the reader will be in “Writing ID Mode”. In this mode
the reader will write the data into the UII bank (01) and start at the address 0x02
and the reader will calculate the length of EPC number and write into PC(protocol
control) block in the tag automatically.