User's Manual
Table Of Contents
- Modbus/TCP Communications
- 7-1 Outline
- 7-2 Message Formats
- 7-3 RF Communications Command Options
- 7-4 Communications Procedure
- 7-5 Commands
- 7-6 V780 Command Details
- 7-6-1 Single-access Communications Commands
- 7-6-2 Multiaccess Communications Commands
- 7-6-3 Modbus Expansion Communications Commands
- 7-6-4 Reader/Writer Control Commands
- 7-6-5 Reader/Writer Setting Commands: Network Settings
- 7-6-6 Reader/Writer Setting Commands: Communications Settings
- 7-6-7 Reader/Writer Setting Commands: Device Settings
- 7-6-8 Maintenance Commands: Device Information
- 7-6-9 Maintenance Commands: Log Information
- 7-6-10 Maintenance Commands: RF Communications Information
7 - 127
7 Modbus/TCP Communications
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
7-6 V780 Command Details
7
7-6-10 Maintenance Commands: RF Communications Information
• Error Response
Execution Examples
Execution with the Following Most Recent Communications Diagnostic Information in the
Reader/Writer
Time information: 09:31:30, Command code: 0003 hex (READ DATA), Error code: 0000 hex (nor-
mal), Diagnostic results: Insufficient power to send (0001 hex), Diagnostic details: Insufficient power
to send + Insufficient power to receive (0003 hex), Reception level: -41 dBm (FFD7 hex), Noise
level: -70 dBm (FFBA hex), EPC code: 11…11
TX: 000000000006FF03DC00002E
RX: 00000000005FFF035C 01091F1E 0003 0000 0001 0003 0000000000000000 FFD7
FFBA 00000000 30001111…11110000…0000
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 iden-
tifier
Function
code
Excep-
tion code
X X 0000 hex 0003 hex FF hex 90 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.