Siemens SIMATIC PROFINET Function Manual page 14

Description
2.1 Introduction to PROFINET
PROFINET IO devices
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.
Number PROFINET
①
②
③
④
⑤
⑥
⑦
Figure 2-2
14
PROFINET IO System
IO controller
Programming device / PC
(PROFINET IO supervisor)
PROFINET/Industrial Ethernet
HMI (Human Machine Interface) Device for operating and monitoring functions.
IO device
I-device
PROFINET devices
Explanation
Device used to address the connected IO devices.
This means that: The IO controller exchanges input and
output signals with field devices.
PG/PC/HMI device used for commissioning and for
diagnostics
Network infrastructure
A distributed field device that is assigned to one of the IO
controllers (e.g., Distributed IO, valve terminals, frequency
converters, switches with integrated PROFINET IO
functionality)
Intelligent IO device
Function Manual, 12/2014, A5E03444486-AF
PROFINET with STEP 7 V13