Source Path Basics when it applies to Underground mine scheduling

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Equipment source path with Advance controls the list of priority of tasks for each piece of equipment to work on. The below are the key fundamental points that user need to know about equipment source path when it is being used for underground mine scheduling.

Source Path controls three things:

1. Which leaves are worked /range/filter
2. The worked leaves order/priority
3. Also, behavior of equipment when unable to complete the defined instructions

Key Source Path Concepts

1. * Means follow the table index

The simplest Source Path possible is a single wildcard asterisk character which tells equipment to work logically lowest index to highest (refer to your source table setup levels) 

1. Allow Advance: On/Off       Used to specify whether equipment needs to follow path exactly, or use it as priority

If Allow Advance: Off, the equipment is only able to do the very first task on the list (for example if you write *, it will only be allowed to do the very first task on the table, once that is done the second, so on). This allows for very precise control of how the equipment operates, but makes it fragile to changes in the schedule that can leave it sitting idle waiting for its task to become available.

If Allow Advance: On, allows the schedule to look further down the path to find the next first task that is available. By setting Allow Advance On allow the equipment to bypass Unreleased tasks and continue on the task list. Once the Unreleased task becomes Released the equipment will prioritize doing this higher priority task, essentially treating the source path as a list of priorities. This ensures that the Equipment does not get stuck on tasks and instead looks for tasks that are available.

1. InRange: and NotInRange: Range Name

Allows for only tasks in (or not in) a range to be included in instructions to Equipment. Affects subsequent lines in the path until overridden by another InRange or NotInRange. Can be reset with a wildcard InRange: *

Source path components

For any range prioritization there are two factors within at least two rows:

1. A row indicating the range
2. A row or a few rows with tasks indicating the priorities, where row sequence or span sequence will both be recognized as indication of sequence

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