Define Compensation Sizes

The MDS Compensation Sizes form contains two tabs for specifying separate rules to calculate the X and Y sizes of the compensating plate.

• The General Rule is used when a rule for a given support type is not defined.

• The Default Value field defines the default X and Y sizes of the compensating plate.

Rules can be created for specific support types by entering the support codes into the support code field, separated by a space. An asterisk can be used to identify all support types. If two rules are defined for the same support type, the first rule in the list for that support type is used and the second is ignored.

A rule must always be a PML expression that returns a REAL value upon evaluation. If the expression contains references to attributes or properties, the expression is evaluated against the ATTA of the support. Therefore it can contain any attribute or property which is available on the ATTA element.

To access the width of the SCTN supporting the ATTA, the syntax 'VVAL( !WIDTH)' can be included into the expression. The profile width in this context is the width of the SCTN face below the ATTA depending on the profile rotation and may not necessarily correspond to the catalogue property WIDT.

If the evaluation of the rule expression fails, then the explicitly set default value is used instead.

To add a new rule to the list of available rules, click Add Entry to display the Add Entry form.

The administrator can populate the Support Codes and X-Size Rule or Y-Size Rule fields with the relevant rule values.

Click OK to add the rule to the list of available rules or Cancel to discard any changes and close the Add Entry window. The administrator is returned to the MDS Compensation Sizes form.

Click Remove Entry to delete the currently selected rule.