Control Module: analog-sensor

A read-only analog sensor. Reads a single analog input, scales raw counts to engineering units, and exposes the result as the PV tag. No outputs. Use this template for temperature, pressure, level, weight, pH, conductivity, moisture, and flow measurements: anything the control system reads but never writes.

Where to find it

System endpoint → Equipment Library → Control Modules tab → select analog-sensor.

FBDST

What you see on the faceplate

Clicking an analog-sensor instance on the unit detail view opens a faceplate with:

Element	Meaning
PV	Measured process value, in engineering units
engMin / engMax	Scale range (used for trend charts and bar graphs)

The faceplate has no command buttons. This template is read-only.

Tags

The template declares deviceClass: sensor (ADR 0016), the HMI rendering category. The category is declared, and the HMI never infers it from moduleType. PV carries role: feedback. A sensor declares no role: state tag, so the feedback value is the card's prominent value.

Tag	Type	Access	Role	Description
PV	Float	read	feedback	Measured process value. The runtime updates it each scan from the scaled AI block.

Parameters

Parameter	What it does
raw_min / raw_max	Input scaling range in raw counts (e.g. 4000-20000 for 4-20 mA)
eng_min / eng_max	Output range in engineering units (e.g. 0-150 °C)
eng_units	Display units (°C, bar, %, kg, pH, µS/cm, etc.)

The scan interval is fixed at 500 ms.

How it works

Each scan, the runtime reads the analog input at the configured address, linearly interpolates the raw value from [raw_min, raw_max] onto [eng_min, eng_max], and publishes the result on the PV tag. Trend charts and bar graphs use eng_min / eng_max for their Y-axis range. The visible data window plays no part in the scale.

Reference instances

The reference plant uses analog-sensor for every measurement point across all three units:

Unit	Measurements
reactor-1	temperature · pressure · level · weight · jacket return temperature · pH
mix-tank-1	level · temperature · headspace pressure · weight · pH · conductivity
filter-dryer-1	cake level · vessel temperature · vessel pressure · filtrate flow · cake moisture · weight

Try it

1. Process → riverbend → pharma-area → sim-cell → reactor-1
2. Click the reactor temperature sensor symbol on the unit detail view
3. Watch PV update every 500 ms — the IOModule's inline simulation drives the value through realistic process dynamics during a batch run
4. Open a trend chart with this tag selected. The Y axis will use the sensor's engineering range (e.g. 0-150 °C), and the visible data's min/max plays no part