Acyclic Communication - Siemens Sinamics G120P Operating Instructions Manual

Operation
6.5 PROFIdrive profile for PROFIBUS and PROFINET
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
Header
Address, parameter 1
Address, parameter 2
...
Address, parameter m
200
Byte n
01 hex ... FF hex
Reference
01 hex
Attribute
10 hex:
Parameter value
20 hex:
Parameter description
0001 hex ... FFFF hex
Parameter number
0000 hex ... FFFF hex
Number of the 1st index
(for parameters without index: 0000 hex)
...
...
...
...
Bytes n + 1
01 hex: Read request
Number of parameters (m)
Number of indexes
00 hex ... EA hex
(for parameters without index: 00 hex)
Operating Instructions, 12/2014, A5E32923362A
n
0
01 hex ... 27 hex 2
4
6
8
...
...
...
...
Inverter cabinet units