Omron V680S Series, User Manual

Page: 213 / 344

Se
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n 7
Me
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Det
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Section 7
Host Communications Specifications
211
RFID System
User's Manual
(Modbus TCP)
Error Response
Communicati
ons
diagnostic
information Diagnostic result 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.
Send power level 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.
Receive power
level 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.
Noise level 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.
Power level 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
Tag ID data 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.
Reserved 0000 hex (fixed)
Parameter Description
Exception code For details, refer to Exception Code Table in this section.
p.167
Parameter Description
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