Acquire Image Tool Properties Monitor Spacing Points In the initialization section, tracking variables are initialized for the spacing reference points. When a spacing part or target is defined, the user specifies the distance between the generated instances. This spacing parameter is used, along with the scale, to determine how much the conveyor must move before a part is generated. After the conveyor moves the specified distance from the reference point, it will send a message to the PC to create an instance using pm.ace.blt.sp . ACE Reference Guide, 18317-000 Rev A Page 662