V600 Commands - Omron V680-CA5D01-V2 User Manual

SECTION 5
Communications

V600 Commands

Read/Write Functions
Read/Write Command Processing
The normal (not auto) read/write functions are used for communications with Tags within a fixed area.
Therefore, check that the Tag is within the Antenna's communications area before sending read/write
commands. If a Tag is not present, a Tag missing error response will be returned.
(Host device)
Read/write
command
Command
completed
Auto Read/Write Functions
Auto Command Processing
The ID Controller does not return a response for AUTO commands until a Tag is within range. The
communications path with the host device is busy during this time.
(Host device)
AUTO
command
Busy
Busy
Command
completed
RFID System
172
User's Manual
(ID Controller) (Tag)
No Tag in area
Tag
Read/write
Tag
processing
Response
Moved
(ID Controller) (Tag)
No Tag in area
Antenna 1
No Tag in area
Antenna 1
Read/write
Tag
processing
Antenna 1
Response
Tag out of area
Antenna 1
Antenna 1
processing
completed
1. Confirm that the Tag is within the
communications area before sending the
command from the host device.
2. The ID Controller performs read or write
processing according to the command.
3. After processing has been completed, the ID
Controller returns a processing completed
response to the host device. The host device
receives the response and then moves the
workpiece (with Tag) along the production line.
1. An AUTO command is sent for an Antenna from
the host device.
2. The ID Controller does not return a response
while the Tag is not in range, so the host device is
in busy status.
3. Read or write processing is performed when the
Tag passes in front of the Antenna.
4. After processing has been completed, the ID
Controller sends a processing completed
response for the AUTO command to the host
device.