Cause

A missing or incorrect channel designation was found at a PLC connection point that is a digital or analog input or output.

The message is output when one of the following conditions is fulfilled for the Channel designation property of the PLC connection point:

• No channel designation was assigned.
• The channel designation consists of an alphanumerical string.
• A numerical string whose value is less than zero was entered as the channel designation.

PLC connection points with the "PLC connection point, internal, general" function definition are not checked before this check run since they are only used for the display of free symbolic addresses.

Solution

1. Locate the relevant PLC connection point in the schematic or in the overview by using the Go to (graphic) function from the popup menu in the Message management dialog.
2. Open the property dialog of the PLC connection point.
3. Enter a value that consists of a numerical string and that is greater than zero in the Channel designation field of the PLC connection point tab.
4. Then start a new check run.