Omron V680 Series User Manual page 199

 GET OPERATING TIME
This query reads the operating time from when the power supply to the Reader/Writer was turned ON.
 Query Format
Byte 0 Byte 1 Byte 2
Transaction
Protocol identifier
identifier
X X 0000 hex
Parameter
Register address
Word count
 Response Format
Normal Response
Byte 0 Byte 1 Byte 2 Byte 3
Transaction Protocol
identifier identifier
X X 0000 hex
Parameter
Byte count
Operating time
Error Response
Byte 0 Byte 1 Byte 2
Transaction
Protocol identifier
identifier
X X 0000 hex
Parameter
Exception code
 Execution Example
Reading the Operating Time When It Is 1234567890
TX: 000000000006FF03C4000002
RX: 000000000007FF0304499602D2
Byte 3 Byte 4 Byte 5
Field length
0006 hex
The register address (C400 hex) that specifies the operating time.
The number of words in the operating time to read (0002 hex)
Byte 4 Byte 5 Byte 6 Byte 7
Unit
Field length Function code
identifier
0007 hex FF hex 03 hex
The number of bytes in the operating time that was read (04 hex)
The operating time from when the Reader/Writer was started in 8-digits hexadecimal (Unit: ms)
Byte 3 Byte 4 Byte 5
Field length
0003 hex
For details, refer to Exception Code Table in this section.
p.167
Host Communications Specifications
Byte 6 Byte 7 Byte 8
Unit Function
Register address
identifier code
FF hex 03 hex C400 hex
Description
Byte 8 Byte 9 Byte 10
Byte count Operating time
04 hex 32 bits
Description
Byte 6 Byte 7 Byte 8
Unit Function Exception
identifier code code
FF hex 83 hex 1 byte
Description
Section 7
Byte 9 Byte 10 Byte 11
Word count
0002 hex
Byte 11 Byte 12
RFID System
User's Manual
(Modbus TCP)
197