Open User Communication
6.3 Instructions for Open User Communication
Communication
72 Function Manual, 12/2017, A5E03735815-AF
Additional instructions for open communication
You can use the following instructions for connections set up in the user program as well for
as configured connections:
● T_RESET: Terminating and establishing a connection
● T_DIAG: Check the connection
Basic examples for Open User Communication
The Siemens Online Support offers you function blocks (FBs) that facilitate the handling of
the instructions of the Open User Communication. You can find the function block with
corresponding examples on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109747710
).
The STEP 7 online help describes:
● The user and system data types
● The instructions for open communication
● The connection parameters
You will find information about the allocation and release of connection resources in the
section Allocation of connection resources (Page 230).
Secure Open User Communication (Page 93)
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