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7 Modbus/TCP Communications
7 - 18
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
With an expanded command, you can execute one multiaccess RF Tag command to get the communi-
cations results from more than one RF Tag with only one command.
Precautions for Correct Use
The normal MULTIACCESS DATA READ and MULTIACCESS ID READ communications com-
mands are designed for applications that read two to five RF Tags at one time. If your applica-
tion requires reading more RF Tags than that, we recommend that you use an expanded
command.
Using an Expanded Command (FC100)
Host device
(client)
Reader/Writer
(server)
RF Tag A
RF Tag B
RF Tag C
SET MULTIACCESS DATA READ
communications command sent.
Communications range
RF Tag memory
read/written.
Error code
Read data
Number of RF Tags: 3
UII (EPC code)
+ RSSI level
Error code
Read data
UII (EPC code)
+ RSSI level
Response returned.
Response returned.
Error code
Read data
UII (EPC code)
+ RSSI level
Command execution
Timeout
(TMO)
RF Tag A
communications results
RF Tag B
communications results
RF Tag C
communications results
Summary of Contents for V780 Series
Page 22: ...Version Upgrade Information 20 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 60: ...3 Part Names and Functions 3 14 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 152: ...6 Functions 6 76 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 334: ...8 Browser Interface 8 44 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 358: ...9 Troubleshooting 9 24 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 392: ...Appendices A 30 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 393: ...I 1 I UHF RFID System V780 series Reader Writer User s Manual Z389 Index ...
Page 397: ......