Absolute Value
easy
Outputs the absolute value of a numeric input.
What it teaches
Strip the sign off a number to get its magnitude. The everyday use is deviation — how far a reading sits from target when the direction does not matter, as in ABS(Setpoint - Actual) feeding a drift alarm. Unlike Sign Check, this changes the number instead of producing comparison flags.
Parameters
| Tag | Direction | Type | Default | Description |
|---|---|---|---|---|
| In_Value | Input | REAL | -7.5 | Signed input value |
| Out_Magnitude | Output | REAL | 0 | Absolute value of the input |
Required behavior
- Out_Magnitude is the absolute value of In_Value every scan.
- Negative inputs become positive; positive inputs pass through unchanged.
- At exactly 0, Out_Magnitude is 0.