Communication
11.1 Asynchronous communication connections
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
803
This is only an example. The actual number of connections used can vary by HMI type and
version.
Total con-
nection
resources
available
Connection
resources
2 2 2 3 3 12
Note
Web server (HTTP) connections: The CPU provides connections for multiple web browsers.
The number of browsers that the CPU can simult
aneously support depends upon how many
connections a given web browser requests/utilizes.
Note
The Open User Communications, S7 connection, HMI, programming device, and Web server
(HTTP) communication connections may utilize multiple connection resourc
es based upon
the features currently being used.
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