A pair cross-reference is usually used with motor overload switches or power circuit breakers. It is created by doubly placing a contact in the schematic. The first-placed pair cross-reference contact, at the main function, points to its counterpiece, the second contact, which is "wired" in the schematic. This second contact in turn points back to the associated pair cross-reference contact at the main function. To allow EPLAN to create a pair cross-reference, the property Representation type of the pair cross-reference contact must be set to "Pair cross-reference".

Preconditions:

• You have opened a project and are in a schematic page.
• You have defined the settings for the representation of cross-references under File > Settings > Projects > "Project name" > Cross-references / contact image > General.
• The schematic contains a motor overload switch or a power circuit breaker which you have defined as a main function.

1. Double-click the component that you wish to define as a pair cross-reference.
2. Enter the DT of the device with which the component is to be cross-referenced in the Displayed DT field of the <Function category> tab of the properties dialog.
3. In the Representation type drop-down list of the Symbol / Function data tab, select the Pair cross-reference setting.
4. Click [OK].
   
   The "Pair cross-reference" and the "logical" device are cross-referenced, meaning the cross-references point to each other and no longer to the main element. The existence of a pair cross-reference symbol thus changes the cross-reference behavior of the main and auxiliary functions.

See also

Cross-references: Cross-reference Types