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Open User Communication

6.5 Setting up Open User Communication via TCP, ISO-on-TCP, UDP and ISO

Communication

Function Manual, 11/2019, A5E03735815-AH

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 checked by the connection parameter settings and

there is no default value entered for the connection ID when you create a new

con

nection.

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.

Changed values are checked immediately for input errors by the connection configuration

and entered in the data block for the connection description.

Note

Open User Communication between two communication partners can only work when the

program section for the

partner end point has been downloaded to the hardware. To a

chieve

fully functional communication, make sure that you load not only the connection description

of the local CPU on the device but also that of the partner CPU as well.

Siemens SIMATIC ET 200SP Function Manual

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