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 - 107
7 Modbus/TCP Communications
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
7-6 V780 Command Details
7
7-6-8 Maintenance Commands: Device Information
Function
This command is used to check the operating status from the Reader/Writer.
Command Format
Response Formats
• Normal Response
• Error Response
GET OPERATING STATUS
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 D300 hex 0002 hex
Parameter Description
Register address The register address (D300 hex) that specifies the operating status
Word count The number of words in the Reader/Writer operating status to read (0002 hex)
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
Byte
count
X X 0000 hex 0007 hex FF hex 03 hex 04 hex
Byte-9 Byte-10 Byte-11 Byte-12
Reader/Writer operating status
Mode Status
2 bytes 2 bytes
Parameter Description
Byte count The number of bytes in the Reader/Writer operating status that was read
(0C hex)
Reader/Writer
operating status
Mode Gives the mode of the Reader/Writer that was read in 4-digits hexadeci-
mal.
0000 hex: Safe Mode
0001 hex: Run Mode
Status Gives the status of the Reader/Writer that was read in 4-digits hexadeci-
mal.
0001 hex: Idling
0002 hex: RF Tag communications in progress
0003 hex: Changing settings
0004 hex: Error
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