Omron V680S Series, User Manual

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Sec
tion 6
Mul
ti-
Re
ader
/Wri
te
r Ope
rat
io
n
Section 6
Functions
127
RFID System
User's Manual
(Modbus TCP)
High-speed Traveling Mode
You can read large data sizes from RF Tags because the data is split up and read by more than one
Reader/Writer on a time-sharing basis while the workpiece is moving.
We recommend that you use this mode when reading data from RF Tags that are moving on a
production line.
For example, if you link four Reader/Writers and each Reader/Writer can read only 25 words, you can
read 100 words of data with the four linked Reader/Writers.
To use the High-speed Traveling Mode, the Master Reader/Writer and Slave Reader/Writers must be
set according to their positions.
Read processing is executed in the following order.
Always set the first Reader/Writer to read data as the Master Reader/Writer. Then set the other Reader/Writers to read
data in order from Slave No. 1, Slave No.2, etc.
Refer to Communications Range Specifications in Section 1 Product Overview and install the Reader/Writers so that
the communications fields do not overlap. If the Reader/Writers are installed to close to each other, the reading speed
will decrease.
p.48
Refer to Travel Speed Calculations in Section 11 Appendices and set the workpiece travel speed.
p.277
For details, refer to Using High-speed Traveling Mode in this section.
p.147
In High-speed Traveling Mode, the Master Reader/Writer must be located first.
PLC
Switching Hub
Workpiece
RF Tag
Master
Reader/Writer
Slave
Reader/Writer
No. 1
Slave
Reader/Writer
No. 2
Slave
Reader/Writer
No. 3
Master
Reader/Writer
Slave
Reader/Writer
No. 1
Slave
Reader/Writer
No. 2
Slave
Reader/Writer
No. 7