Omron V680 Series User Manual page 138

Section 6
Functions
 Getting Communications Diagnostic Results
1.
Use the GET COMMUNICATIONS DIAGNOSTIC INFORMATION query to get the diagnostic results.
 Query Format
Byte 0
Transaction
identifier
X
 Response Format
Normal Response
Byte 0
Transaction
identifier
X
Byte 9 ··· Byte 12 Byte 13
Operating time
4 bytes
Communications diagnostic information
Parameter
Operating time
Query type
Communications
result
Diagnostic result
RFID System
136
User's Manual
(Modbus TCP)
Byte 1 Byte 2 Byte 3 Byte 4
Protocol identifier
X 0000 hex
Byte 1 Byte 2 Byte 3 Byte 4
Protocol identifier
X 0000 hex
Byte 14 Byte 15 Byte 16 Byte 17 Byte 18
Communications
Query type Diagnostic result
result
2 bytes 2 bytes 2 bytes
Size
4 bytes Contains the system operating time for communication diagnostic in 8-digit hexadecimal.
00000000 to FFFFFFFF hex (unit: ms)
2 bytes Contains the query type for communication diagnostic in 4-digits hexadecimal.
0001 hex : READ ID
0002 hex : READ DATA
0003 hex : WRITE DATA
0004 hex : LOCK
0005 hex : DATA FILL
0006 hex : RF TAG OVERWRITE COUNT CONTROL
0007 hex : RESTORE DATA
0008 hex : COPY DATA
2 bytes Contains the error code for communication diagnostic in 4-digits hexadecimal.
(This is the upper word of the end code in response to the RF Tag communications query.)
0000 hex : Normal end
0003 hex : Communications precaution
2001 hex : RF Tag missing error
2002 hex : RF Tag communications error
2003 hex : Tag ID mismatch error
2004 hex : RF Tag address error
2005 hex : RF Tag lock error
2006 hex : RF Tag verification error
2007 hex : RF Tag data lost error
2008 hex : RF Tag system error
2009 hex : RF Tag overwriting error
2 bytes 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.
Byte 5 Byte 6 Byte 7
Unit
Field length Function code
identifier
0006 hex FF hex 03 hex
Byte 5 Byte 6 Byte 7
Unit Function
Field length
identifier code
001F hex FF hex 03 hex
Byte 19 Byte 20 Byte 21 Byte 22 Byte 23
Receive power
Send power level Noise level
level
2 bytes 2 bytes 2 bytes
Description
Byte 8 Byte 9 Byte 10
Register address
CA00 hex
Byte 8 Byte 9 ···
Byte count Communications diagnostic information
1C hex (28 bytes)
Byte 24 Byte 25 Byte 26 Byte 27 ··· Byte 34
Power level Tag ID data
2 bytes 8 bytes
Byte 11
Word count
0000 hex
Byte 36
Byte 35 Byte 36
(Reserved)
2 bytes