Omron V680 Series User Manual page 213

Parameter
Communicati Diagnostic result
ons
diagnostic
information
Send power level
Receive power
level
Noise level
Power level
Tag ID data
Reserved
Error Response
Byte 0 Byte 1 Byte 2
Transaction
Protocol identifier
identifier
X X 0000 hex
Parameter
Exception code For details, refer to Exception Code Table in this section.
Contains the result for communication diagnostic in 4-digits hexadecimal.
0000 hex : Normal communications
0001 hex : Insufficient power to send
0002 hex : Insufficient power to receive
0003 hex : Too much noise
0004 hex : Insufficient signal-to-noise ratio.
• The value is 0000 hex (fixed) when the communications result shows normal
communications.
• If a communications precaution is given for the communications result, the result
indicates the cause.
Contains the send power level for communication diagnostic in 4-digits hexadecimal.
0 to 10
• This is the corrected lowest value of DAC (10-bit) where communications with the RF Tag
were successful out of the multiple send power levels.
• The value is 0000 hex (fixed) when the communications result shows an RF Tag missing
error.
Contains the receive power level for communication diagnostic in 4-digits hexadecimal.
0 to 10
• This is the corrected ADC (10-bit) value for response communications with the RF Tag.
• The value is 0000 hex (fixed) when the communications result shows an RF Tag missing
error.
Contains the noise level for communication diagnostic in 4-digits hexadecimal.
0 to 10
• This is the corrected ADC (10-bit) value before communications with the RF Tag were
executed.
Contains the power level for communication diagnostic in 4-digits hexadecimal.
0 to 10
• This parameters contains the overall value of the send and receive power levels
calculated with the following formula.
(Send power level + Receive power level)/2
Contains the Tag ID data of the recognized RF Tag for communication diagnostic in 16-
digits hexadecimal.
• The value is 0000000000000000 hex (fixed) when the communications result shows an
RF Tag missing error.
0000 hex (fixed)
Byte 3 Byte 4 Byte 5
Field length
identifier
0003 hex FF hex
p.167
Host Communications Specifications
Description
Byte 6 Byte 7 Byte 8
Unit Function Exception
code code
83 hex 1 byte
Description
Section 7
RFID System
211
User's Manual
(Modbus TCP)