Configuring Hardware and Communication Connections STEP 7.pdf

Configuring Connections
12.9 Inconsistent Connections
If a connection is inconsistent, the structure of the connection data is disrupted, or
the connection would not be capable of functioning in the context of the project.
Inconsistent connections cannot be compiled and loaded - no operation is possible
with such a connection.
Inconsistent connections are identified in the connection table by the color red and
italics.
Possible Causes of Inconsistent Connections
• Deleting or altering the hardware configuration
Remedies
• Missing networking of interfaces in the project that are necessary for a
connection
• Exceeding connection resources
• Error in saving data due to insufficient memory
• Connections to an unspecified partner without specifying the partner address
• Connections to a "partner in an unknown project ", whereby the connections
have yet to be configured
Detailed information about the causes of inconsistent connections are listed in the
Outputs on Consistency Check window (after the consistency check has been run,
menu command Network > Check Consistency or Network > Check Cross-
Project Consistency).
Detailed information on the cause of the inconsistency can be obtained by editing
the connection properties (highlight the connection and select the menu command
Edit > Object Properties).
For many causes, it is enough to edit the connection properties to reestablish
consistency, that is, to correct the connection data. The inconsistent connection
can be corrected when the new properties are assumed.
If the connection cannot be repaired by opening the connection properties,
changing or reversing the configuration, it may be necessary to delete and recreate
the connection.
Configuring Hardware and Communication Connections with STEP 7
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