Hitachi WL200 Series - Page 47

Chapter 8 PROFINET Specification
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8.12.2 Parameter access on PROFIdrive
The request data frame to parameter access on PROFIdrive is the following.
Word offset
Block
Byte n
Byte n+1
0
Request header
Request reference
Request ID
1
Axis-No. / DO-ID
The number of parameters
= i
2
1st Parameter address
Attribute
The number of elements
3
PNU
4
Subindex
-
3i + 1
ith Parameter address
...
3i + 2
1st Parameter value
Format
The number of values
3i + 3
Value
...
ith Parameter value
...
The Parameter values need to be set only for request “Change parameter”. These don’t need to
be set for request “Request parameter”.
The response data frame to parameter access on PROFIdrive is the following.
Word offset
Block
Byte n
Byte n+1
0
Response header
Request reference
= (*)
Request ID
1
Axis-No. / DO-ID
= (*)
The number of parameters
= i
2
1st Parameter value
Format
The number of values
3
Value or error code
...
ith Parameter value
...
(*)These are same as the request.
The Parameter values exist only for request “Request parameter”.
The descriptions of data are the following.
Block
Field
Data type
Description
Request
Header
Request
Reference
Unsigned8
The message ID.
Unique ID of the request / response pair
for the PROFINET IO controller.
Reserved : 0x00
ID : 0x01 - 0xFF
Request ID
Unsigned8
The type of request data.
Request parameter : 0x01
Change parameter : 0x02