Omron CJ1W-V680C11, Руководство пользователя

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SECTION 5
Commun
ic
a
tion
s Spec
if
icat
io
ns
SECTION 5
ID Sensor Unit Functions
85
RFID System
User's Manual
Communications Specifications
There are seven execution sequences that can be used to communicate with the RF Tag. The sequence is
specified in the Communications Specification (CIO n+1, bits 04 to 07) in the command settings in the Special
I/O Unit Area.
Note: FIFO trigger, FIFO repeat, Multi-access trigger, and Multi-access repeat specification cannot be
used for communicating with V680-D1KP @@ RF Tags.
Name
Communications
specification
Description
Trigger
0
When the Command Execution Bit turns ON, communications are performed with the
RF Tag in the interrogation zone and processing is ended.
Single auto
1
After the Command Execution Bit turns ON, the ID Sensor Unit waits until an RF Tag
is detected in the interrogation zone, communications are performed, and processing
is ended.
Repeat auto
2
The operation for a single auto specification is repeated. Once communications have
been completed with a specific RF Tag, communications will not be performed with it
again even if it remains in the interrogation zone. Processing is ended when the
Abort Bit is turned ON.
FIFO trigger
(See note)
3
When the ID Sensor Unit receives a command, it communicates with an RF Tag and
returns a response. After communicating, all further operations with that RF Tag are
prohibited. The ID Sensor Unit communicates with only one RF Tag in the
interrogation zone. If an RF Tag that has been communicated with for a trigger
specification is within the interrogation zone, the ID Sensor Unit will not communicate
with it a second time.
FIFO repeat
(See note)
4
When the ID Sensor Unit receives a command, it waits until an RF Tag is detected
within the interrogation zone, then returns a response. After communicating, all
further operations with that RF Tag are prohibited. After returning the response, the
ID Sensor Unit again waits for an RF Tag to approach it, and continues repeating the
operation until the Abort Bit turns ON.
Multi-access trigger
(See note)
5
When the ID Sensor Unit receives a command, it communicates with all RF Tags in
the interrogation zone, returns responses in order. After communicating, all further
operations with those RF Tags are prohibited. If there are no RF Tags in the
interrogation zone, the ID Sensor Unit will return an RF Tag missing error.
Multi-access repeat
(See note)
6
When the ID Sensor Unit receives a command, it waits for RF Tags to approach it. It
communicates with each RF Tag in the interrogation zone, and returns responses in
order. After communicating, all further operations with those RF Tags are prohibited.
After returning the responses, the ID Sensor Unit again waits for RF Tags to
approach it, and continues repeating the operation until the Abort Bit turns ON.