Open User Communication
6.5 Setting up Open User Communication via TCP, ISO-on-TCP, UDP and ISO
Communication
Function Manual, 12/2017, A5E03735815-AF
79
Additional values are determined and entered after the selection or creation of the
connection description DB or configured connection.
The following is valid for specified connection partners:
– ISO-on-TCP connection type
– Connection ID with default of 1
– Active connection establishment by local partner
– TSAP ID
for S7-1200/1500: E0.01.49.53.4F.6F.6E.54.43.50.2D.31
The following is valid for unspecified connection partners:
– TCP connection type
– Partner port 2000
The following applies for a configured connection with a specified connection partner:
– TCP connection type
– Connection ID with default of 257
– Active connection establishment by local partner
– Partner port 2000
The following applies for a configured connection with an unspecified connection partner:
– TCP connection type
– Local port 2000
7. Enter a connection ID as needed for the connection partner. No connection ID can be
assigned to an unspecified partner.
Note
You must enter a unique value for the connection ID at a known connection partner. The
uniqueness of the connection ID is not be checked by the connection
parameter settings
and there is no default value entered for the connection ID when you create a new
connection.
8. Select the desired connection type in the relevant drop-down list. Default values are set
for the address details depending on the connection type. You can choose between the
following:
– TCP
– ISO-on-TCP
– UDP
– ISO (only with Configuration mode "Use configured connection")
You can edit the input boxes in the address details. Depending on the selected protocol,
you can edit the ports (for TCP and UDP) or the TSAPs (for ISO-on-TCP and ISO).
9. Use the "Active connection establishment" check box to set the connection establishment
characteristics for TCP, ISO and ISO-on-TCP. You can decide which communication
partner establishes the connection actively.
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