Data Transmission; Data Transmission Options; Communication Principle - Siemens SIRIUS 3RW44 System Manual

PROFIBUS DP Communication Module
8.2

Data Transmission

8.2.1 Data Transmission Options

8.2.2 Communication Principle

8-6
The following figure illustrates the data transmission options:
Master class 1
SIMATIC S7 with PROFIBUS DP communications processor
Data transmission to master
class 1.
Figure 8-12:Data transmission options
The following figure illustrates the communication principle. Different data is
transmitted depending on the operating modes of the master and slave:
Master Class 1
cyclic I/O
PLC
Configuration
3RW44
Cycl. signaling data
Cycl. control data
Figure 8-13:Communication principle
Max. two master class
2 possible.
PROFIBUS DPV1 extension of the standard:
Parameterization,
diagnosis, controlling, signaling, testing via
PROFIBUS DPV1
PLC-CPU
acyclic
Communications processor
GSD
Disable
starting
parameters
Sirius 3RW44 Soft Starter
Diagnosis Alarms Parameter
DPV0
DPV1
Master class 2
PC or PD with
Soft Starter ES Professional
PC/PD e.g. with Soft Starter ES Smart or
Soft Starter ES Professional
Parameterization, diagnosis, controlling, signaling,
test via system interface
Master Class 2 (Max.2)
acyclic
Acyclic
PC or PCS
e. g.
Soft Starter ES
Professional
Data sets
Data sets
DPV1
SIRIUS 3RW44 System Manual
GWA 4NEB 535 2195-02 DS 04