Siemens S7-300 Configuration Manual page 98

Configuring communications connections
5.3 Inconsistent connections - connections without assignment
Action
Delete a third-party station.
Change the subnet assignment
of the CP.
In the connection table inconsistent connections are marked in red.
Note
Unspecified connections are marked red
Unspecified connections are not necessarily inconsistent although they are marked in red in
the connection table.
Behavior in STEP 7 Professional
Table 5- 3 Actions for a CP interface that can cause changes in configured connections
Action
Delete the CP (module in an
S7 station).
Delete device (station).
Change the subnet assignment
of the CP.
98
Consequence for the connections
The connections of the stations in the
project to third-party stations remain
without an assignment in the
connection table. In the "Overview" tab
of the Properties dialog, the
connections are identified with "!".
The connections that were assigned via
the CP remain without an assignment
in the connection table. In the
"Overview" tab of the Properties dialog,
the connections are identified with "!".
Note:
does not apply to connections if routers
are used.
Consequence for the connections
The connections remain intact in the
connection table without assignment to
a CP.
The assignment to the CPU / PC
application remains.
All the connections to this device are
canceled in the project.
Connections remain as unspecified
•
connections on the partner.
Connections without a connection
•
partner are completely deleted.
The connections that were assigned via
the CP remain but may be inconsistent.
What you must do to restore the connection
Reassign a third-party station (or even a local
station) to the connection again using the Edit >
Connection partner function.
Reassign the connections with the Edit >
Connection partner function or in the properties
dialog of the relevant connection in the
"Addresses" tab.
What you must do to restore the connection
After you have placed and networked a CP in
the hardware configuration:
1. Assign the CP to the connection;
2. Check the module start address LADDR
and customize if necessary in the user
program.
3. Customize the connection IDs in the user
program.
4. Reload the connection configuration into the
CP.
Reconfigure the device and connections.
Either reassign unspecified connections or
delete them.
Where necessary, reassign connections.
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13