Configuring Communication Connections

4.3.4Connections Without Assignment

Overview

This section explains the actions that can lead to a configured connection losing its assignment to the CP or being deleted.

Caution

Remember that in contrast to the S7 connections, the connections of the SEND/RECEIVE interface are assigned a CP-dependent ID. The actions below may require the ID to be modified so that the interface information in the user program must also be adapted.

Notice

If you replace one CP with another, this must provide at least the same services and have at least the same version. This is the only way to ensure that the connections configured over the CP remain consistent and can be used.

Table 4-3 Actions That Can Cause Changes to Configured Connections

Action

Consequences for the

How to Establish the Connection

 

Connections

Again

 

 

 

The CP (module) is

The connections are retained.

1. Adapt the module start address

moved to a different

The connection IDs are

LADDR in the user program.

location in the hardware

 

automatically updated.

2. Download the connection

configuration (drag and

 

configuration to the CP again.

drop)

 

 

 

 

 

 

The CP (module) is

The connections remain without

Once you have placed a CP in the

deleted in the hardware

assignment to a CP in the

hardware configuration and networked it:

configuration.

connection table. In the

1. Assign the CP in the connection

 

You receive the message

“Overview” tab of the Properties

properties dialog in the “Addresses”

“CP has n connections;

dialog, the connections are

tab.

the assignment will be lost

or

identified with “!”.

in the connection table”.

 

Reassign the connection using the

 

 

menu option Edit " Connection

 

 

Partner....

 

 

2. Adapt the connection ID in the user

 

 

program.

 

 

3. Download the connection

 

 

configuration to the CP again.

 

 

 

Deleting the SIMATIC S7

All the connections to this station

Reconfigure the station and

station.

are deleted within the project.

connections.

 

Note:

 

 

The does not apply to

 

 

connections to a partner that

 

 

uses a router.

 

 

 

 

100

 

SIMATIC NET NCM S7 for Industrial Ethernet

 

Release 6/2003

C79000–G8976–C129–07

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Siemens NCM S7 appendix Connections Without Assignment, Assignment to a CP, Menu option Edit Connection, Partner

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