When adding SPS to an attachment point, the 'Location' options differ slightly from when attaching equipment to other structure types. These options affect what happens to the SPS position when your attachment point is moved.
There are two 'Location' options when adding SPS to an attachment point.
Linked: The SPS location is linked to the attachment point, so will move when the attachment point position is adjusted. This means you adjust the SPS height via the attachment point 'Height' and 'Rel. Ht.' controls in the 'Edit Structure' window.
Unlinked: The SPS location is not linked with the attachment point, so will not move when the attachment point position is adjusted. To adjust the SPS height, use the 'Height' control in the 'SPS' sub-menu of the 'Edit Wire' dialog.
Attachment Point SPS and Reassociating Tracks
When reassociating the tracks of an attachment point, the combination of your 'Location' setting and 'Maintain Relative Foundation Height' toggle (shown below) will affect what happens to the SPS position if your tracks have moved.
The possible scenarios for this are as follows:
The attachment point will move with the tracks, the SPS location is linked to the attachment point, so the SPS will move with it to maintain the 'Relative height' value as shown below.
The attachment point will move with the tracks, the SPS is not linked with the attachment point, so the SPS will move with the track to maintain the current 'Height' value that has been input on the SPS as shown below.
The attachment point structure does not move with the tracks and the SPS is linked to the unmoving attachment point, so this will not move either.
The attachment point will not move with the tracks, the SPS isn’t linked to the attachment point, so the SPS will move with the tracks to maintain the current 'Height' value that has been input on the SPS as shown below.