30
S
E
CTI
O
N 3
Communic
a
tions
De
s
igna
tion
Func
tion
Electromagnetic Inductive RFID System
User's Manual
SECTION 3
Functions
Communications Designation Function
The CF Reader/Writer automatically detects Tags for the communications commands given in the following
table.
Communications Designations (SA/RA)
SA and RA automatically detect Tags and communicate with them.
■
SA Designation
When the Single Auto command (SA) is specified, command processing is completed when communi-
cations have been completed.
■
RA Designation
When the Repeat Auto command (RA) is specified, the CF Reader/Writer waits for the next Tag each
time communications are completed. Once communications have been performed with a Tag, there
are no more communications with that Tag until the Tag has moved outside the communications area.
This processing is repeated until it is ended when the Command Processing Abort command (AA) is
received.
Symbol
Name
Description
SA
Single Auto command
After the Single Auto command has been received, a communication is executed when a
Tag is detected in the communications area and a response is returned.
RA
Repeat Auto command
The operation specified under SA is repeatedly executed. The CF Reader/Writer commu-
nicates only once with each Tag, even if that Tag continues to be in the communications
area.
CF Reader/Writer
Tag
Communications are started when a
Tag enters the communications area.
Host to CF Reader/Writer
CF Reader/Writer to Host
Between CF Reader/Writer and Tag
(Tag movement)
Response
Communica-
tions
Tag
SA command
- Processing completed -
Host to CF Reader/Writer
CF Reader/Writer to Host
Between CF Reader/Writer and Tag
(Tag movement)
Response Response
Communi-
cations A
Response
Communi-
cations B
Response
Communi-
cations C
Tag A
Tag B
Tag C
RA command
AA command
- Processing completed -
Waiting for a Tag
Waiting for a new Tag
Waiting for a new Tag
Summary of Contents for V670-CF01
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