4 Commissioning
4.4 Acyclic data
50
DX-NET-SWD
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4.4.4.4 SmartWire-DT write request – Write job
Only individual parameter writing is supported (i.e., array and multiple
parameter writing is not supported). The maximum parameter request frame
length is set at 16 bytes. The maximum length of a writable parameter is one
double word. Various objects can be transmitted in the parameter channel –
these objects are identified by what is referred to as a PNU (parameter num-
ber) and a subindex. The write request includes a declaration that specifies
that the job is a write job.
Byte
Designation
Description
0
Request Reference
Request identification:
Unique identification for a request/response pair for the master.
The master can increment the identification number for each new
request in the application. The DC1 variable frequency drive will
then echo it.
01
hex
- FF
hex
(i. e. 1
dec
- 255
dec
)
1
Request ID
Request ID:
The type of request is specified here.
02
hex
: Write job
2
DO-ID
Drive-Object-ID:
00
hex
3
No. of Paramters
Number of parameters:
Only individual parameter processing is supported.
01
hex
4
Attribute
Attribute:
Defines which object type should be accessed.
10h
ex
(16
dez
): Value
5
No. of Elements
Number of elements:
Address of the parameter that should be accessed
PNU 0 up to PNU 999: 00
hex
(only for subindex 0)
PNU 0 up to PNU 999: 01
hex
6, 7
Parameter number
Parameter number (PNU):
Address of the parameter that should be accessed
0000
hex -
FFFF
hex
(i. e. 0
dec
- 65535
dec
)
8, 9
Subindex
Subindex:
Address of the parameter's first field element or start of the text
0000
hex
- FFFF
hex
(i. e. 0
dec
- 65535
dec
)
10
Format
Format:
01
hex
- 7C
hex
(
→
01
dec
- 124
dec
): data type
11
No. of Values
Number of values: Number of values being accessed.
01
hex
12 – (15)
Value
Value: Specifies the value of the parameter being accessed.
The length depends on the format and can be a maximum of 4 bytes.
00000000
hex
- FFFFFFFF
hex
(i. e. 0
dec
- 4294967295
dec
)
→
In this case, the number of bytes is variable (13, 14, or 16) and
will depend on the selected format.
Summary of Contents for PowerXL DX-NET-SWD
Page 4: ...II ...
Page 10: ...0 About this Manual 0 6 Units 6 DX NET SWD 06 13 MN04012009Z EN www eaton com ...
Page 16: ...1 Device series 1 7 Disposal 12 DX NET SWD 06 13 MN04012009Z EN www eaton com ...
Page 26: ...3 Installation 3 4 Dismantling 22 DX NET SWD 06 13 MN04012009Z EN www eaton com ...
Page 64: ...4 Commissioning 4 5 SmartWire DT diagnostics 60 DX NET SWD 06 13 MN04012009Z EN www eaton com ...
Page 68: ...5 Appendix 5 2 SmartWire DT 64 DX NET SWD 06 13 MN04012009Z EN www eaton com ...