Communications Methods
Section 5-5
5-41
5-5-3
Table of Communications Methods
Name
Code
Description
Single Trigger
ST
Immediately after receiving a command, the Controller communicates
with a Tag and returns a response. If the Tag is missing, an error is re-
turned. During communications, only one Tag exists in the communica-
tions area of the Antenna.
Single Auto
SA
After receiving a command, the Controller waits for a Tag to enter the
communications area. Next, the Controller communicates with the en-
tering Tag and returns a response. During communications, only one
Tag exists in the communications area.
Single Repeat
SR
The Controller waits for a Tag to enter the communications area and
communicates with the entering Tag. After sending a response, the
Controller is put into a Tag waiting state again and repeats this process
until receiving the Stop or Reset Command. During communications,
only one Tag exists in the communications area.
Multi-trigger
MT
Immediately after receiving a command, the Controller communicates
with all of the Tags existing in the communications area and returns
responses corresponding to each Tag. After sending the responses, the
Controller enters a command waiting state.
Multi-repeat
MR
The Controller waits for Tags to enter the communications area. It
communicates with all of the Tags existing in the communications area
and returns responses corresponding to each Tag. After completing
communications, the Controller disables the operation of the Tags. After
sending the responses, the Controller is put into a Tag waiting state
again and repeats this process until receiving the Stop or Reset Com-
mand.
FIFO Trigger
FT
Immediately after receiving a command, the Controller communicates
with a Tag and returns a response. After completing communications,
the Controller disables the operation of the Tag. After sending the re-
sponse, the Controller will continue to operate until it receives a FIFO
command, stop command, or reset command. During communications,
only one Tag in the communications area is operable.
FIFO Auto
FA
After receiving a command, the Controller waits for a Tag to enter the
communications area. Next, the Controller communicates with the en-
tering Tag and returns a response. After sending the response, the
Controller will continue to operate until it receives a FIFO command,
stop command, or reset command. After sending the response, the
Controller enters a command waiting state. During communications,
only one Tag in the communications area is operable.
FIFO Repeat
FR
The Controller waits for a Tag to enter the communications area and
communicates with the entering Tag. After completing communications,
the Controller disables the operation of the Tag. After sending the re-
sponse, the Controller enters a Tag waiting state again and repeats this
process until receiving the Stop or Reset Command. During communi-
cations, only one Tag in the Communications area is operable.
Selective
Access
LT or
□□
A Tag selected from among multiple Tags in the communications area
is accessed.
