Siemens S7-300 - Page 98

Configuring communications connections
5.3 Inconsistent connections - connections without assignment
Configuring and commissioning S7 CPs for Industrial Ethernet
98 Configuration Manual, 09/2013, C79000-G8976-C182-13
Action
Consequence for the connections
What you must do to restore the connection
Delete a third-party station. 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 "!".
Reassign a third-party station (or even a local
station) to the connection again using the
Edit >
Connection partner
function.
Change the subnet assignment
of the CP.
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.
Reassign the connections with the
Edit >
Connection partner
function or in the properties
dialog of the relevant connection in the
"Addresses" tab.
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
Consequence for the connections
What you must do to restore the connection
Delete the CP (module in an
S7 station).
The connections remain intact in the
connection table without assignment to
a CP.
The assignment to the CPU / PC
application remains.
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.
Delete device (station). 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.
Reconfigure the device and connections.
Either reassign unspecified connections or
delete them.
Change the subnet assignment
of the CP.
The connections that were assigned via
the CP remain but may be inconsistent.
Where necessary, reassign connections.