4 Commissioning
4.4 Acyclic data
DX-NET-SWD
06/13 MN04012009Z-EN
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49
4.4.4.3 SmartWire-DT write request – Read job
Only individual parameter reading is supported (i.e., array and multiple param-
eter reading is not supported). The parameter request’s frame length is set at
10 bytes.
Various objects can be transmitted in the parameter channel – these objects
are identified by what is referred to as a PNU (parameter number) and a sub-
index. The write request includes a declaration that specifies that the job is a
read 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.
They are ten mirrored by DC1 variable frequency drive.
01
hex
- FF
hex
(i. e. 1
dec
- 255
dec
)
1
Request ID
Request ID:
The type of request is specified here.
01
hex
: Read request
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.
10
hex
(16
dez
): Value
5
No. of Elements
Number of elements:
Number of vector elements or length of the string being accessed.
PNU 0 up to PNU 999: 00
hex
(only for subindex 0)
PNU 0 to PNU 999 (without 202): 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
)
→
In this case, the number of bytes is always 10.
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 ...