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Section 7 Message Details
RFID System
User's Manual
(Modbus TCP)
Section 7
Host Communications Specifications
GET Reader/Writer OPERATING STATUS
This query reads the operating status from the Reader/Writer.
Query Format
Response Format
Normal Response
Error Response
Execution Example
Reading Status When the Reader/Writer Is in Run Mode and Idling
TX: 000000000006FF03C3000002
RX: 000000000007FF030400010001
Parameter Description
Register address The register address (C300 hex) that specifies the Reader/Writer operating status.
Word count The number of words in the Reader/Writer operating status to read (0002 hex)
Parameter Description
Byte count The number of bytes in the Reader/Writer operating status that was read (04 hex)
Reader/Writer
operating status
Mode Contains the mode of the Reader/Writer that was read in 4-digits hexadecimal.
0000 hex: Safe Mode
0001 hex: Run Mode
0002 hex: Slave Mode
Status
information
Contains the status of the Reader/Writer that was read in 4-digits hexadecimal.
0000 hex: Initializing
0001 hex: Idling
0002 hex: RF Tag communications in progress
0003 hex: Downloading
0004 hex: Error
0005 hex: Shutdown in progress
Parameter Description
Exception code For details, refer to Exception Code Table in this section.
p.167
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
identifier
Protocol identifier Field length
Unit
identifier
Function
code
Register address Word count
X X 0000 hex 0006 hex FF hex 03 hex C300 hex 0002 hex
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9
··· Byte 12
Transaction
identifier
Protocol
identifier
Field length
Unit
identifier
Function code
Byte count
Reader/Writer operating
status
XX
0000 hex 0007 hex
FF hex 03 hex 04 hex 4 bytes
Byte 9 Byte 10 Byte 11 Byte 12
Mode Status information
2 bytes 2 bytes
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8
Transaction
identifier
Protocol identifier Field length
Unit
identifier
Function
code
Exception
code
X X 0000 hex 0003 hex FF hex 83 hex 1 byte
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