Description
2.1 Introduction to PROFIBUS
PROFIBUS with STEP 7 V13
Function Manual, 12/2014, A5E03775446-AC
13
Devices with PROFIBUS DP
The figure below shows the most important components with PROFIBUS DP. The table
below lists the designations of the individual components.
Number PROFIBUS
Note
①
DP master system
②
DP master
Device used to address the connected DP slaves. The DP master
exchanges input and output signals with field devices.
The DP master is often the controller on which the automation
program runs.
③
PG/PC
PG/PC/HMI device for commissioning and diagnostics
DP master of class 2
④
PROFIBUS
Network infrastructure
⑤
HMI
Device for operating and monitoring functions
⑥
DP slave
Distributed field device assigned to the DP master, e.g., valve
terminals, frequency converters.
⑦
I-slave
Intelligent DP slave
Figure 2-2
Devices with PROFIBUS
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