Siemens SIMATIC ET 200AL - Allocation of Connection Resources

Connection resources
11.2 Allocation of connection resources
Communication
230 Function Manual, 12/2017, A5E03735815-AF
11.2
Allocation of connection resources
Overview - occupation of connection resources
The following figure shows how different connections occupy the resources of the S7-1500.
①
HMI communication: See below.
②
Open User Communication: Connections of Open User Communication occupy a connection
resource in every end point.
③
S7 communication: Connections of S7 communication occupy a connection resource in every
end point.
④
Web
communication: The Web server connection occupies at least one connection resource in
the station. The number of occupied connections depends on the browser.
⑤
PG communication: The PG connection occupies one connection resource in the station.
⑥
OPC UA communication: Each session that the OPC
UA server of the CPU establishes with an
OPC UA client as a rule occupies one connection resource (other communication) in the sta-
tion.
Connection resource for HMI communication
Connection resource for Open User Communication
Connection resource for S7 communication
Connection resource for Web communication
Connection resource for PG communication
Connection resource for other communication (for example OPC UA)
Figure 11-2 Allocation of connection resources