Siemens Simantic Net NCM for Industrial Ethernet S7 - Manual (Page 97)

Configuring Communication Connections
97
SIMATIC NET NCM S7 for Industrial Ethernet
C79000-G8976-C129–06
4.3.4 Connections 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.
Table 4-3 Actions That Can Cause Changes to Configured Connections
Action Consequences for the
Connections
How to Establish the Connection
Again
The CP (module) is
moved to a different
location in the hardware
configuration (drag and
drop) The connections are retained.
The connection IDs are
automatically updated.
1. Adapt the module start address
LADDR in the user program.
2. Download the connection
configuration to the CP again.
The CP (module) is
deleted in the hardware
configuration.
You receive the message
“CP has n connections;
the assignment will be lost
in the connection table”.
The connections remain without
assignment to a CP in the
connection table. In the
“Overview” tab of the Properties
dialog, the connections are
identified with “!”. Once you have placed a CP in the
hardware configuration and networked it:
1. Assign the CP in the connection
properties dialog in the “Addresses”
tab.
or
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
station. All the connections to this station
are deleted within the project. Reconfigure the station and
connections.