IUH-F117-V1-*
Operation
20
13
-0
4
31
7.4
Read/Write Commands
Single Read Read-Only Code SF
One attempt is made to read a read-only code (TID). The read-only code is 4, 8,
or 12 bytes long, and comprises a 4-byte part number, which denotes the tag
type, and optionally a tag with a unique serial number of 4 or 8 byte.
Example:
SF1 reads the read-only code to IDENT
Control
channel 1.
Enhanced Read Read-Only Code EF
This command continuously attempts to read a read-only code (TID). If a read-
only code is read, this is reported once to the control interface. If there is no tag in
the measurement range, or if the tag leaves the measurement range, a status 5
message is reported to the control interface.
Example:
EF1 continuously reads the read-only code to IDENT
Control
channel 1
Single Read Special Read-Only Code SS
This command reads the UII segment from tags according to EPC Gen2 (ISO/IEC
18000-63).
Example:
SS10 reads the entire UII segment.
The length of the UII/EPC can vary depending on the type of tag. The data is
structured as follows:
<SpecialFixcode> = <PC> & <UII/EPC>
<PC> corresponds to the protocol control word in accordance with EPC Gen 2
(ISO/IEC 18000-63), 2 bytes long.
<UII/EPC> contains the usage data.
Command: SF <ChanNo> <CHCK> <ETX>
Response:
<Status> <ChanNo> <Read-Only Code> <CHCK> <ETX>
Command: EF <ChanNo> <CHCK> <ETX>
Response:
<Status> <ChanNo> <Read Only Code> <CHCK> <ETX>
Command: SS <ChanNo> 0 <CHCK> <ETX>
Response:
<Status> <ChanNo> <SpecialFixcode> <CHCK> <ETX>
