51
Accessing Parameters
Section 4-5
4-5-2-5
Processing an Error Response
When the Option Board is unable to execute one of the read parameter
instructions, it adds an error value to the result data. Reading parameters
A001, A166 and P033 for example:
Has the following result:
Note that the value of parameter A166 is replaced with an error value in the
result data. Inverter parameter A166 does not exist, so error number 0000h
(Bad parameter number) is returned. Note that the values of A001 and P033
are returned irrespective of other read errors.
Note
If a read on one of the elements in an array fails, an error is returned on the
parameter. Successfully read elements can therefore not be returned.
Table 69 DP-V1 Class 2 Write-Parameter Read Instruction Bad Parameter
Word offset
DP He
ader
MSAC
2_W
rite
+0
+1
Description
Request Header
REF RT DO
N
Message
data
[hex]
0A
01
01
03
[dec]
10
1
1
3
Request reference
3 parameters address to follow
Parameter read instruction
1
st
Inverter attached to Option Board
+2
+3
+4
+5
+6
+7
+8
+9
+10
DP T
railer
Parameter Address
Parameter Address
Parameter Address
PA CA
PNU
IND
PA CA
PNU
IND
PA CA
PNU
IND
10
00
03E9
0000
10
00
048E
0000
10
00
3EA1
0000
16
0
1001
0
16
0
1166
0
16
0
16033
0
Parameter A001
Parameter A166
Parameter P033
Non-array
Non-array
Non-array
Addressing a value
Addressing a value
Addressing a value
Table 70 DP-V1 Class 2 Read-Result of Read Instruction on Bad Parameter
Word offset
DP Head
er
MSAC2_R
ead
+0
+1
Description
Request Header
REF
RT
DO
N
Message
data
[hex]
0A
81
01
03
[dec]
10
129
1
3
Request reference
3 error values to follow
Parameter read error
1
st
Inverter attached to Option Board
+2
+3
+4
+5
+6
+7
DP T
rai
ler
Value
Value
Value
FMT
CV
DATA
FMT
CV
DATA
FMT
CV
DATA
42
01
0004
44
01
0000
42
01
0302
66
1
4
68
1
0
66
1
770
DATA format = WORD
DATA format = WORD
DATA format = Error no
Bad parameter number
1 value
A001
A166
P033
I111E-EN-02+3G3AX-MX2-RX-PRT+OperManual.book Seite 51 Donnerstag, 8. September 2011 11:53 11
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Страница 6: ...vi...
Страница 14: ...xiv Compliance with EC Directives...
Страница 20: ...6 Introduction to PROFIBUS Section 1 3...
Страница 36: ...22 How to mount the Option Board on the Inverter Section 2 3...
Страница 42: ...28 Configuring the Network Section 3 2...
Страница 70: ...56 Limitations Caused by Inverter Mode and Rating Selection Section 4 7...
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