Siemens SIMATIC PROFINET Function Manual page 21

Transparent data access
Access to process data from different levels of the factory is supported by PROFINET
communication. By using Industrial Ethernet, standard mechanisms of communication and
information technology such as OPC/XML can now be used along with standard protocols
such as UDP/TCP/IP and HTTP in automation engineering. This allows transparent access
from company management level directly to the data from the automation systems at the
control level and production level.
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②
③
Figure 2-4
PROFINET with STEP 7 V14
Function Manual, 09/2016, A5E03444486-AG
Management level
Control level
Production level
Access to process data
Description
2.1 Introduction to PROFINET
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