Omron V680S-HMD63-ETN User Manual page 188

Section 7
Host Communications Specifications
 GET Reader/Writer OPERATING STATUS
This query reads the operating status from the Reader/Writer.
 Query Format
Byte 0 Byte 1
Transaction
identifier
X
Parameter
Register address
Word count
 Response Format
Normal Response
Byte 0 Byte 1
Transaction
identifier
X X
Byte count
Reader/Writer
operating status
Error Response
Byte 0 Byte 1
Transaction
identifier
X
Parameter
Exception code
 Execution Example
Reading Status When the Reader/Writer Is in Run Mode and Idling
TX: 000000000006FF03C3000002
RX: 000000000007FF030400010001
RFID System
186
User's Manual
(Modbus TCP)
Byte 2 Byte 3 Byte 4
Protocol identifier Field length
X 0000 hex 0006 hex
The register address (C300 hex) that specifies the Reader/Writer operating status.
The number of words in the Reader/Writer operating status to read (0002 hex)
Byte 2 Byte 3 Byte 4 Byte 5 Byte 6
Protocol Unit
Field length
identifier identifier
0000 hex 0007 hex FF hex
Parameter
The number of bytes in the Reader/Writer operating status that was read (04 hex)
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 Contains the status of the Reader/Writer that was read in 4-digits hexadecimal.
information 0000 hex: Initializing
0001 hex: Idling
0002 hex: RF Tag communications in progress
0003 hex: Downloading
0004 hex: Error
0005 hex: Shutdown in progress
Byte 2 Byte 3 Byte 4
Protocol identifier Field length
X 0000 hex
For details, refer to Exception Code Table in this section.
p.157
Byte 5 Byte 6 Byte 7
Unit Function
identifier code
FF hex 03 hex
Description
Byte 7 Byte 8
Function code Byte count
03 hex 04 hex
Description
Byte 5 Byte 6 Byte 7
Unit Function
identifier code
0003 hex FF hex 83 hex
Description
Byte 8 Byte 9 Byte 10 Byte 11
Register address Word count
C300 hex 0002 hex
Byte 9 ··· Byte 12
Reader/Writer operating
status
4 bytes
Byte 9 Byte 10 Byte 11 Byte 12
Mode Status information
2 bytes 2 bytes
Byte 8
Exception
code
1 byte