4-1 Communication Designation Function
4-3
4-1-3 Designation of External Trigger System Communication (SI/RI/PI)
In the external trigger system communication designation, the communication is started at a leading edge of an external input signal.
The communication is directly controlled by output of a sensor which detects a tag in the communication area. So, the communication
can be executed even in a fast line without fail.
SI designation:
In the single designation (SI), the controller command processing is ended by terminating the communication.
RI designation:
In the repeat designation (RI), the system waits for a leading edge of the next input signal even after the communication is ended. The
communication is executed to the tag whenever the leading edge of input signal is detected. Repeat processing is ended by a command
process abort command (AA).
To the external input of ID controller
The system waits for a leading edge of an
input signal when a command has been
issued by a host. (An sensor is one of
examples.) The communication is exe-
cuted to the tag in the communication area
at the leading edge of the input signal. If
the tag is not in the communication area,
an error occurs to indicate that there is no
tag in the communication area.
Tag
Antenna
Host
→
Controller
Host
←
Controller
Controller
↔
Tag
External input
SI mode command
Response*
* Responds whether there is a tag or not.
Communication
End of process
Waiting for input
Host
→
Controller
Host
←
Controller
Controller
↔
Tag
External input
SI designation command
Response*
* Responds whether there is a tag or not.
Communication
End of
process
Waiting for
input
Response*
Communication
Waiting for input
Response*
(Terminated)
AA command
Содержание V670 Series
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