Errors and Countermeasures
Section 9
Section 9
Troubleshooting
247
RFID System
User's Manual
(Modbus TCP)
IP Address Duplication Error
Turn OFF the power supply to the Reader/Writer, remove the Reader/Writer from the network, correct
the IP addresses, add the Reader/Writer to the network, and turn the power supply back ON.
System Errors
Turn OFF the power supply, check the wiring, and then turn ON the power supply. If the problem does
not change, recovery is not possible for the error. Replace the Reader/Writer.
Multi-Reader/Writer Execution Error
Check the combination of the Multi-Reader/Writer Mode and the RF Tag communications option.
Or, check the IP address settings to see if the Slave Reader/Writer is using the same IP address as the
Master Reader/Writer.
The RF Tag communications queries that you can use during multi-Reader/Writer operation (Field
Extension Mode or High-speed Traveling Mode) are shown in the following table.
If you use any RF Tag communications query that cannot be used for the Master Reader/Writer, and
Multi-Reader/Write execution error will be indicated in the response.
Queries That Can Be Addressed to a Master Reader/Writer
RF Tag communications
query
Multi-Reader/Writer Mode
Field Extension Mode High-speed Traveling Mode
READ DATA Supported Supported
WRITE DATA Supported Not supported
DATA FILL Not supported Not supported
RF TAG OVERWRITE
COUNT CONTROL
Not supported Not supported
READ ID Supported Not supported
COPY DATA Not supported Not supported
LOCK Not supported Not supported
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