Positioning and Comparison Rules

Setting	Description
Overwrite Existing	Existing position numbers are overwritten when assigning new ones.
Equal Part Detection	Single parts are checked for equality. If they are identical, they are assigned the same position number. Parts are considered identical when deviations with respect to dimensions and drill diameter are within the values given as reference tolerances.
Equal Group Detection	The groups are checked for equality as well. Groups are considered identical when identical single parts are arranged in the same mounting position. However, single parts are only compared using their position number because positioning has already been carried out before. If parts are identical but have different position numbers, the groups will also be assigned different position numbers. Subgroups, assemblies and connections can be compared with each other in the same way.
Save Single Part Pos Numbers	When a single part, which already has a position number, gets a new position number at positioning, the existing position number is saved in the field OrigPosnum in the parts properties.
Save Group Pos Numbers	When a group, which already has a position number, gets a new position number at positioning, the existing position number is saved in the field OrigPosnum in the group properties.
Weld Marks	The attached weld marks are taken into consideration as well when the single parts are checked for equality. Weld cracks are small drill holes with parts that have to be mounted.
Include Subgroups	Subgroups are completely included in the calculation of equality. Otherwise, only the main parts of the subgroups are used.
First Mainparts then Subparts	First, all main parts of groups are positioned (and sorted according to the sorting criteria within the groups), followed by the accessory parts (also sorted according to the sorting criteria). This can be deemed as an additional, even higher ranking sorting criterion. If this field is checked and you have entered a position number in the input field Start Accessory Parts at, positioning of the accessory parts will start at the defined position number. You may for instance start with 1 for main parts and with 100 for accessory parts.
Subparts start at	Sets the initial position number for the group subparts.
Don't use Bolts for group sub compare	When checked, the bolts are ignored for sub group comparison.
Differentiation	When the group is assigned the position of the main part (normal case), it may happen that two different groups having the same main part are assigned identical position numbers. In such cases, the program will check in a second run whether or not the groups are really identical. If not, it will change the group position number. 25 -> 25.1 – The changed group positions are identified by the index ‘.1’ etc. following their position number (i. e. 100.1 , 100.2 , ...). 25 -> 25A - The changed group positions are identified by the index ‘A’ etc. following their position number (i.e. 100A, 100B, ...). 25 -> MAX+1 – Positioning of the changed group positions is continued after the highest position currently assigned. When the last group was position 50, the changed groups now have the positions from 51 onward.
Takeover Mainpart Position -> Group	The position of the main part is taken over as group position. If necessary, the group position is changed afterwards during second check. If this option is not requested, but you rather prefer a separate number area, the numbers will start at the position entered in Start Groups at.
Position Sub groups alone	Subgroups are individually positioned from the specified position number onwards. For assemblies, the value in the field below is valid. Sub groups start at – Sets the start value for the sub groups in positioning. Assemblies start at – Sets the start value for the assemblies in positioning.

Overwrite Existing

Existing position numbers are overwritten when assigning new ones.

Equal Part Detection

Single parts are checked for equality. If they are identical, they are assigned the same position number. Parts are considered identical when deviations with respect to dimensions and drill diameter are within the values given as reference tolerances.

Equal Group Detection

The groups are checked for equality as well. Groups are considered identical when identical single parts are arranged in the same mounting position.

However, single parts are only compared using their position number because positioning has already been carried out before. If parts are identical but have different position numbers, the groups will also be assigned different position numbers. Subgroups, assemblies and connections can be compared with each other in the same way.

Save Single Part Pos Numbers

When a single part, which already has a position number, gets a new position number at positioning, the existing position number is saved in the field OrigPosnum in the parts properties.

Save Group Pos Numbers

When a group, which already has a position number, gets a new position number at positioning, the existing position number is saved in the field OrigPosnum in the group properties.

Weld Marks

The attached weld marks are taken into consideration as well when the single parts are checked for equality. Weld cracks are small drill holes with parts that have to be mounted.

Include Subgroups

Subgroups are completely included in the calculation of equality. Otherwise, only the main parts of the subgroups are used.

First Mainparts then Subparts

First, all main parts of groups are positioned (and sorted according to the sorting criteria within the groups), followed by the accessory parts (also sorted according to the sorting criteria).

This can be deemed as an additional, even higher ranking sorting criterion. If this field is checked and you have entered a position number in the input field Start Accessory Parts at, positioning of the accessory parts will start at the defined position number. You may for instance start with 1 for main parts and with 100 for accessory parts.

Subparts start at

Sets the initial position number for the group subparts.

Don't use Bolts for group sub compare

When checked, the bolts are ignored for sub group comparison.

Differentiation

When the group is assigned the position of the main part (normal case), it may happen that two different groups having the same main part are assigned identical position numbers. In such cases, the program will check in a second run whether or not the groups are really identical. If not, it will change the group position number.

25 -> 25.1 – The changed group positions are identified by the index ‘.1’ etc. following their position number (i. e. 100.1 , 100.2 , ...).
25 -> 25A - The changed group positions are identified by the index ‘A’ etc. following their position number (i.e. 100A, 100B, ...).
25 -> MAX+1 – Positioning of the changed group positions is continued after the highest position currently assigned.

When the last group was position 50, the changed groups now have the positions from 51 onward.

Takeover Mainpart Position -> Group

The position of the main part is taken over as group position. If necessary, the group position is changed afterwards during second check.

If this option is not requested, but you rather prefer a separate number area, the numbers will start at the position entered in Start Groups at.

Position Sub groups alone

Subgroups are individually positioned from the specified position number onwards. For assemblies, the value in the field below is valid.

Sub groups start at – Sets the start value for the sub groups in positioning.
Assemblies start at – Sets the start value for the assemblies in positioning.

OpenBridge Modeler

Positioning and Comparison Rules - Options tab