Description
2.1 Introduction to PROFINET
PROFINET with STEP 7 V15
20 Function Manual, 12/2017, A5E03444486-AH
The following graphic shows the general names used for the most important devices in
PROFINET. In the table below the graphic you can find the names of the individual
components in the PROFINET IO context.
IO controller Device used to address the connected IO devices.
This means that: The IO controller exchanges input and
output signals with field devices.
Programming device / PC
PG/PC/HMI device used for commissioning and for di-
PROFINET/Industrial Ethernet
HMI (Human Machine Interface)
Device for operating and monitoring functions.
IO device A distributed field device that is assigned to one of the
IO controllers (e.g., Distributed IO, valve terminals, fre-
quency converters, switches with integrated
PROFINET IO functionality)
Figure 2-2 PROFINET devices
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