User's Manual

7 - 63
7 Modbus/TCP Communications
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
7-6 V780 Command Details
7
7-6-5 Reader/Writer Setting Commands: Network Settings
 Function
This command is used to check the Modbus/TCP communications conditions of the Reader/Writer.
 Command Format
 Response Formats
• Normal Response
• Error Response
 Execution Examples
Execution When the Following Modbus/TCP Communications Conditions Are Set in the
Reader/Writer
Port number: 502
TX: 000000000006FF03B2000001
RX: 000000000005FF030201F6
GET MODBUS/TCP COMMUNICATIONS CONDITIONS
Byte-0 Byte-1 Byte-2 Byte-3 Byte-4 Byte-5 Byte-6 Byte-7 Byte-8 Byte-9 Byte-10 Byte-11
Transaction identi-
fier
Protocol identifier Field length Unit
identifier
Function
code
Register address Word count
X X 0000 hex 0006 hex FF hex 03 hex B200 hex 0001 hex
Parameter Description
Default set-
ting
Register address The register address (B200 hex) that specifies the Modbus/TCP communications conditions
Word count The number of words of the Modbus/TCP communications conditions to read (0001 hex)
Byte-0 Byte-1 Byte-2 Byte-3 Byte-4 Byte-5 Byte-6 Byte-7 Byte-8 Byte-9 Byte-10
Transaction identi-
fier
Protocol identifier Field length Unit
identifier
Function
code
Byte
count
Modbus/TC com-
munications condi-
tions
Port number
X X 0000 hex 0005 hex FF hex 03 hex 02 hex 2 bytes
Parameter Description
Byte count The number of bytes in the Modbus/TCP communications conditions that were
read (02 hex)
Modbus/TC
communica-
tions conditions
Port num-
ber
Gives the Modbus/TCP communications port number in 4-digit hexadecimal.
Example: 01F6 hex (502)
Byte-0 Byte-1 Byte-2 Byte-3 Byte-4 Byte-5 Byte-6 Byte-7 Byte-8
Transaction identi-
fier
Protocol identifier Field length Unit
identifier
Function
code
Excep-
tion code
X X 0000 hex 0003 hex FF hex 83 hex 1 byte
Parameter Description
Exception code For details, refer to Exception Code on page 7-7 under 7-2-3 Response Format for
Error Completion on page 7-7.