Siemens SIMATIC ET 200AL System Manual page 1589

Description
2.1 Introduction to PROFINET
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.
①
②
③
Figure 2-4
24
Management level
Control level
Production level
Access to process data
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL