FieldengInstrumentation & Controls
PLC Analog Input Scaling
PLC raw analog input to pressure. Default raw range 0–32767.
Instrumentation & Controls
PLC raw analog input to pressure. Default raw range 0–32767.
App id: INST-16. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
EU = EU_L + (raw − raw_L) / (raw_H − raw_L) × (EU_H − EU_L)Inputs
| Name | Unit |
|---|---|
| Raw count | 1 |
| EU lower | psi |
| EU upper | psi |
| Raw minimum (optional) | 1 |
| Raw maximum (optional) | 1 |
Outputs
| Name | Unit |
|---|---|
| Engineering value (hero result) | psi |
| Raw span | % |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
| When | Observation | Severity |
|---|---|---|
span fraction < 0 or span fraction > 1 | Outside configured span | caution |
Assumptions
- Engineering dimension is pressure. INST-17 inverts this mapping.
Provenance
- Linear PLC analog input scaling. Raw endpoints default to 0 and 32767.