Hardware manual

VPM Linking Impact Reference Guide
Datalogic Automation Inc. 3-28
When you select a new Vision Program file from the list, the current Program (and the Vision Program file)
is unloaded and the selected one is loaded.
Program files with names other than the Filter names can be loaded and unloaded through the Settings Tab -
File Manager - Setup.
If no loaded Program names match those in the Filter, then the drop-down current selection is blank.
See “To create a vision program” on page 3-30 for more details.
VPM Linking
In VPM, links are the data connections between tools and tasks. They are made in the destination tool’s
Input and Output tabs. They can only be made between compatible data types. For example, you cannot link
an integer data type output directly into a real data type input. Inputs can be linked to inputs or outputs, but
outputs can only be linked to inputs (they are source only).
Links Between VPM Tools
Automatic Image Linking
When a tool with an image input is added to a task, the image input for that tool is linked to the same image
that was last used as an image source for other tools in that task. If that input is empty, automatic linking
searches for a suitable link in the following order:
1. The task Image property.
1. Task inputs and inputs promoted to the task level of color image or image data types.
2. The tools in the task are searched in execution order until one is found that has an Image data type out-
put. In the case of Data Instance tools, the inputs are searched.
3. If no suitable default is found, a link is not automatically made. You can still make a manual link.
Vision Program
Task A
Tool A
Task B
Links
Tool B
Tool C
Tool D