Omron V680-HS63 - Page 71

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RFID System
User's Manual
SECTION 5
Timing Charts
SECTION 5
Communications
Auto Mode (500 ms Output Time)
The timing chart for auto mode with a 500-ms output time is shown in the following figure.
INHIBIT
RUN
BUSY
ERROR
ID
A
B C D E F G H I J
Communications Range Communications Range
K L
500 ms
500 ms
RF Tag
NORMAL
ERR_SUB
A: The PLC turns ON INHIBIT, and sends the execution command to the FL Remote ID.
B: The FL Remote ID checks that INHIBIT
is ON, determines the CMD (command), LEN (data length),
and ADDR (start address), and then turns ON BUSY.
C: The FL Remote ID starts communications with an RF Tag when one enters the Antenna's
communications range.
D: The FL Remote ID turns ON NORMAL when communications with the RF Tag ends normally. For
READ DATA, the read data is output to the FL Remote ID. For NOISE MEASUREMENT, the
measurement data is output to the FL Remote ID.
E: The RF Tag moves out of the Antenna's communications range.
F: The FL Remote ID waits for the RF Tag to leave the Antenna's communications range, and then turns
OFF the result output 500 ms afterward.
When measuring noise, the noise will be measured and the results will be output alternately while
INHIBIT is OFF, regardless of whether there is an RF Tag present.
G: The FL Remote ID starts communications with the RF Tag when one enters the Antenna's
communication range.
H: The FL Remote ID turns ON NORMAL when communications with the RF Tag is finished. For READ
DATA, the read data is output to the FL Remote ID.
I: The RF Tag moves outside the antenna's communication range.
J: The FL Remote ID waits for the RF Tag to move outside the Antenna's communications range, and
then turns ON the result output 500 ms afterward.
K: The PLC sets INHIBIT
to 0 (OFF) to prevent command execution by the FL Remote ID.
L: The FL Remote ID confirms that INHIBIT
is OFF, and then turns OFF BUSY.