90 PROFINET IO – Communication protocol
Slot number
For more information on the above function blocks, see document
Communication Function Blocks for PROFIBUS DP and
PROFINET IO v2.0 available at www.profibus.com.
Parameter data transfer examples
The following examples show how parameter data is transferred
using the DP-V1 mechanisms READ and WRITE.
Note: Only the data block part of the request is presented in the
examples. See section
01
01
DP
header
Example 1a: Reading a drive parameter (array
DP-V1 Response
element)
Drive parameters are addressed so that the drive parameter group
Beispiel 3: Einen PROFIdrive-Parameter lesen
corresponds to the Parameter index (PNU), and the drive
In diesem Beispiel wird PROFIdrive-Parameter 919 (397h) zum Lesen der
parameter number within the group corresponds to the Subindex
Gerätesystemnummer des Slaves verwendet; dies ist der Produktcode des
(IND). In the following example, a value is read from drive
Frequenzumrichters.
parameter 12.04 (0C.04h).
Write_param_1202_2008_2.pdf
•
DP-V1 Write request (Read parameter value):
• DP-V1 Schreibauftrag (Lesen eines PROFIdrive Parameters):
01 01 B0 2F 0A 05 01 01 01 10 01 00 0C 00 04
DP
header
DP-V1 Command
• DP-V1 Lese-Antwort:
DP-V1_Write_request_1.pdf
PROFINET IO – Communication protocol 83
Subslot number
Index
Data length
Read and write blocks
B0
2F
04
08
Parameter Channel
Slot number
Subslot number
Index
Data length
Request reference
PROFIdrive V3 Parameter Channel
PROFINET IO – Kommunikationsprotokoll 137
Request reference (mirrored)
Response ID
Drive object ID (mirrored)
on page 75.
02
01
02
PROFIdrive V3
Request ID (01h= Request Parameter
Drive object ID
Number of parameters
Attribute (10h = Value)
Number of elements
Number of parameters
DP
trailer
Parameter index
Subindex
DP trailer