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3-1 Outline of Operations
3-1
Outline of Operations
Control Unit
(Computer)
(1) Command waiting mode
(2) Oscillation mode
(3) Standby mode
Note
As the first step, open the COM port so that the RFID unit will shift its mode from "Standby
mode" to the "Command waiting mode".
The RFID Unit reads or writes to the tags using commands sent from the host
control unit, and returns the processing responses to the host control unit.
Command
Response
The RFID Unit has three operating modes. The conditions for changing the
mode are shown in the following diagram.
In this mode, the COM port is open and ready to receive a command as a
virtual COM port.
This mode performs communications with the tags.
When using FIFO access mode, oscillation mode continues until a STOP
command or STOP signal is input.
In this mode, the COM port is closed as a virtual COM port.
COM Port
Close
Standby mode
RFID Unit
V720S-HMU01
Command waiting
mode
COM Port
Open
Responses to
host sent
Section 3-1
V720 series
Tag
Commands from
host received
Oscillation mode
3-2
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