Siemens SIMATIC S7-1500 Function Manual page 31

Communications services
3.4 Setting up a connection
Effects on the connection resources of the CPU
You can often choose between a configured or a programmed connection. Programmed
connection setup allows connection resources to be released following data transfer. Like
routed connections, programmed connections are not guaranteed, meaning that they are
only established when resources are available. With configured connection setup, the
resource is available after download of the configuration until the configuration changes
again. Corresponding resources are therefore reserved for connection establishment via
configured connections. The "Connection resources" table in the Inspector window of the
CPU displays an overview of connection resources already used and those still available.
How do I set up a connection?
Table 3- 5
Connection
Programming device connection
HMI connection
Web communication
OPC UA server communication
OPC UA client communication
Open communication via TCP/IP
connection
Open communication via ISO-on-
TCP connection
Open communication via UDP
connection
Open communication via ISO con-
nection
Open communication via FDL
connection
Communication via Modbus TCP
connection
E-mail connection
FTP connection
S7 connection*
* Note that for an S7-1500 CPU you must enable the use of PUT/GET communication in the proper-
ties of the CPU. You can find more information on this topic in the STEP 7 online help.
Additional information
You will find further information on the allocation of connection resources and the display of
connection resources in STEP 7 in the section Connection resources (Page 307).
30
Setting up the connection
Automatically Programmed setup
X -
X -
X -
X -
- X
- X
- X
- X
- X
- X
- X
- X
- X
- -
Function Manual, 11/2019, A5E03735815-AH
Configured setup
-
X
-
-
-
X
X
X
X
X
-
-
-
X
Communication