Overview

Variables are wrapped in brackets and are prefixed with the Source identifier followed by a period, then the variable name in all lower case with an underscore used in place of spaces.

Example:

[PCSDB.general_equipment_status]

[Focas.cycle_status]

Constants are wrapped in brackets and are prefixed with the Source identifier followed by a period, then the constant name in all upper case with an underscore used in place of spaces.

Example:

[PCSDB.CYCLING]

[Focas.MEM]

Parameters are wrapped in curly brackets and a place holder is typically shown in all caps.

Example:

[Focas.spindle_speed]{SPINDLE NUMBER}

The text SPINDLE NUMBER should be replaced with the actual spindle number such as a 1.

The expressions can utilize comparison, logical, and math operators. Parentheses are used to specify the order of operation and are required when building expressions.

Comparison Operators

Example:

([Focas.part_count] > [Focas.prev_part_count])

Logic Operators

Example:

([PCSDB.general_equipment_status]!=[PCSDB.CYCLING]) AND ([Focas.cycle_status]=[Focas.CYCLING])

Math Operators

Words are used as the math operators rather than the traditional symbols since symbols such as the dash are commonly used in part numbers.

Example:

([Focas.part_count] MINUS [Focas.prev_part_count])

You can find an example of a custom calculation here.

Use of Parentheses

When building an expression each evaluation must be wrapped in parentheses.

Example:

([PCSDB.general_equipment_status]!=[PCSDB.CYCLING]) AND ([Focas.cycle_status]=[Focas.CYCLING])

When building a Target expression parentheses should not be used.

Example:

[Focas.part_count] MINUS [Focas.prev_part_count]

When building expressions using OR double parentheses should be used. This will make the system evaluate this potion of the expression first.

Example:

(([PCSDB.general_equipment_status]!=[PCSDB.CYCLING]) OR ([Focas.cycle_status]=[Focas.CYCLING]))

*This can be used with a result to set a custom value. See here for more detail.

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