Siemens SINAMICS G120P, Operating Instructions Manual

Page: 200 / 496

Operation
6.5 PROFIdrive profile for PROFIBUS and PROFINET
Inverter cabinet units
200
Operating Instructions, 12/2014, A5E32923362A
Procedure
To configure direct communication, proceed as follows:
1.
In the controller, define:
–
Which inverters operate as publisher (sender) or subscriber (receiver)?
– Which data or data areas do you use for direct communication?
2. In the inverter, define:
How the subscriber processes the data transferred using direct communication?
6.5.2 Acyclic communication
You can communicate with the inverter both cyclically and acyclically via PROFIBUS and
PROFINET.
The inverter supports the following types of acyclic communication:
● Reading and writing parameters via "data set 47" (up to 240 bytes per write or read
request)
● Reading-out profile-specific parameters
Reading parameter values
Table 6- 8 Request to read parameters
Data block Byte n Bytes n + 1 n
Header Reference
01 hex ... FF hex
01 hex: Read request 0
01 hex Number of parameters (m) 01 hex ... 27 hex 2
Address, parameter 1 Attribute
10 hex:
Parameter value
20 hex:
Parameter description
Number of indexes
00 hex ... EA hex
(for parameters without index: 00 hex)
4
Parameter number
0001 hex ... FFFF hex
6
Number of the 1st index 0000 hex ... FFFF hex
(for parameters without index: 0000 hex)
8
… …
Address, parameter 2 … …
… … …
Address, parameter m … …