144
Section 6 Using Field Extension Mode
RFID System
User's Manual
(Modbus TCP)
Section 6
Functions
3. Slave Reader/Writer No. 1 will communicate with the RF Tag using the Once communications option.
Here, communications will end normally or an RF Tag communications error will occur, the Reader/
Writer will return a response to the host device, and processing will end. If an RF Tag tag missing error
is detected, processing will be continued in order by Slave No. 2 and then by Slave No. 3.
4. If an RF Tag missing error is detected for Slave No. 3, the error is returned to the host device and
processing ends.
PLC
Master Reader/Writer
Slave
Reader/Writer No. 1
IP:192.168.1.200
IP:192.168.1.201
IP:192.168.1.202
Slave
Reader/Writer No. 2
IP:192.168.1.203
Slave
Reader/Writer No. 3
PLC
Master Reader/Writer
Slave
Reader/Writer No. 1
IP:192.168.1.200
IP:192.168.1.201
IP:192.168.1.202
Slave
Reader/Writer No. 2
IP:192.168.1.203
Slave
Reader/Writer No. 3
Error response
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