SCADA (Supervisory Control and Data Acquisition) is a system architecture that collects real-time data from remote field equipment like sensors, PLCs, and RTUs, then presents it to operators in a control room for monitoring and decision-making.

What are the layers of a SCADA system?

A SCADA system has six layers: field instruments (sensors/actuators), controllers (PLCs/RTUs), communications network, data acquisition servers, historian databases, and the operator HMI (Human-Machine Interface).

Is SCADA the same as an HMI?

No. An HMI is the visualization layer that operators interact with. SCADA is the full system architecture including data acquisition, communications, and control — the HMI is one component of SCADA.

SCADA SYSTEMS

See It.Control It.Protect It.

SCADA systems connect the physical world to digital intelligence. Aevus helps operators move beyond monitoring into predictive operational awareness — across radios, PLCs, and the assets that keep critical infrastructure running.

EXPLORE THE PLATFORM HOW SCADA WORKS

PREDICT

PREVENT

PERFORM

PROTECT

01 / FUNDAMENTALS

What Is SCADA?

SCADA — Supervisory Control and Data Acquisition — is the system industrial operators use to monitor, control, and respond to equipment across distributed infrastructure. Pipelines, substations, water districts, manufacturing lines: SCADA is the nervous system underneath.

What it doesConnects field sensors and actuators to a control room, persists their state, raises alarms when behavior deviates, and lets operators issue commands back — in real time, across thousands of assets.

Real-Time Visibility

See every tag, every pump, every breaker as it changes — not minutes later. Operators trust what they’re looking at because it matches the field.

Remote Control

Issue commands to assets thousands of miles away — open a valve, isolate a feeder, restart a pump — with the same confidence as standing next to it.

Alarm Awareness

Critical events are surfaced through prioritized alarms, audible cues, and acknowledgement workflows — never lost in a noisy event log.

Historical Trends

Years of timestamped operating data become a tool for engineers — compare runs, replay incidents, validate performance against design.

02 / ARCHITECTURE

A SCADA Stack From Sensor To Boardroom

Six layers, one continuous signal path. Telemetry rises, commands fall, alarms break the silence only when something genuinely needs an operator’s attention. Hover any layer for context.

Telemetry (up)
Commands (down)
Alarm event

LEVEL 06Enterprise SystemsBusiness intelligence

ERP

BI / KPI

Asset Mgmt

Reporting

4nodes

LEVEL 05HMIsOperator workstations

Console A

Console B

Mobile

Wallboard

4nodes

LEVEL 04SCADA ServersSupervisory layer

Polling

Historian

Alarms

Failover

LEVEL 03Communication NetworkField transport

Radio

Cellular

Fiber

Satellite

4nodes

LEVEL 02PLCs / RTUsLocal control

PLC-12

PLC-14

RTU-A

Gateway

4nodes

LEVEL 01Field DevicesSensors & actuators

Pressure

Flow

Valve

Pump

4nodes

04 / DELTA

Why Traditional SCADA Isn’t Enough

Classical SCADA does its job: it shows what happened and lets you respond. But the economics of modern infrastructure demand more — fewer failures, less downtime, and a clearer picture of what’s about to break. That’s the gap Aevus fills.

REACTIVE MONITORING

Traditional SCADA

Sees the present. Records the past. Tells you when something already broke.

REACTIVE ALARMS
You find out something failed after it already failed.
FRAGMENTED VISIBILITY
Each site has its own HMI, its own logic, its own quirks.
LIMITED PREDICTION
Thresholds catch obvious failures, not slow degradation.
AGING INTERFACES
Operators trained on screens designed two decades ago.
SILOED HISTORIANS
Years of operating data trapped per-site, hard to query.
WEAK INFRA HEALTH
Radio links, PLC firmware, switches — largely invisible.

PREDICTIVE INTELLIGENCE

SCADA + Aevus

Reads behavior. Models drift. Flags failures before alarms fire.

PREDICTIVE FAILURE DETECTION
Behavioral models flag drift weeks before threshold alarms.
RADIO + PLC + NETWORK HEALTH
Score the comms path itself, not just what it carries.
INTELLIGENCE LAYER
Sits above existing SCADA — no rip-and-replace.
ROLE-BASED DASHBOARDS
Operators, engineers, and executives see what they need.
SMART ALERT PRIORITIZATION
Suppress nuisance noise, surface the events that matter.
INFRASTRUCTURE CONFIDENCE
A single score for how trustworthy your operation is right now.

Infrastructure Coverage

The assets under watch.

SCADA is the nervous system of distributed industrial infrastructure. Below is the cross-section of what Aevus keeps eyes on in production today — each tile is a live asset class, each readout is a real tag we ingest, score, and reason about.

Live · NOC-1 Austin

4,128 assets monitored

3.5K data points / sec

99.97% ingest uptime · trailing 30 d

Compressor Station

CS-038 · Permian E

Reeves Co., TX · 31.8°N

WARNING

HIGH DISCHARGE · stage 2

SUCTION

412psig

DISCHARGE

1,148psig

BEARING T

186°F

Substation

SS-12 · Brazos Loop

Hood Co., TX · 138 kV

NOMINAL

BUS A

138.2kV

BUS B

138.1kV

LOAD

47.8MW

Remote Telemetry Unit

RTU-204 · Pad N7

Karnes Co., TX · 4G+

NOMINAL

UPTIME

99.97%

SIGNAL

-71dBm

BATTERY

12.8V

Tank Battery

TB-19 · Lease 4101

Howard Co., TX · 4×400 bbl

NOMINAL

T-1

78%

T-2

64%

T-3

91%

Water Pump

WP-07 · Lift Station 3

Travis Co., TX · 250 hp

NOMINAL

FLOW

2,140gpm

HEAD

184ft

VIBRATION

0.18in/s

Field Radio

RDO-MTN · Sierra Repeater

Culberson Co., TX · 902 MHz

NOMINAL

LINK

SNR

32dB

PEERS

64rtus

SCADA Command Center

NOC-1 · Austin HQ

24/7 · 11 operators

NOMINAL

ASSETS

4,128live

EVENTS/S

3.5Kpts

INCIDENTS

0open

06 / SECURITY

Mission-Critical Systems Demand Mission-Critical Defense

A SCADA outage is a service outage. A SCADA compromise is a public-safety event. Defense in depth is not a checkbox — it’s the architecture under everything else on this page.

Frameworks aligned toNIST 800-82 · IEC 62443Operator session capture100% recorded & replayableOT detection coverageModbus · DNP3 · OPC UA

Network segmentation

IT, OT, and field networks separated by zones and conduits — a breach in one segment does not become a breach in all.

Least-privilege access

Operators, engineers, and integrators see only the assets and commands their role requires — nothing more.

Multi-factor authentication

Every console login requires a second factor — passwords alone never reach a control surface.

Audit logs

Every command, every config change, every login is timestamped and attributed — replayable months later.

Secure remote access

Jump hosts, brokered sessions, and recorded operator video — no flat VPN into the control LAN.

Backups & recovery

PLC programs, historian archives, and HMI configs versioned offsite — a ransomware event is not a rebuild from scratch.

Continuous monitoring

OT-aware detection on the wire — anomalous protocol traffic flagged the moment it appears.

07 / WHERE AEVUS FITS

A LAYER, NOT A REPLACEMENT

Aevus isn’t here to replace SCADA.
It’s here to make SCADA smarter.

Aevus sits above your existing industrial systems as an intelligence layer — consuming the same tags your historian sees, but learning behavior over time. We help teams detect degradation, reduce downtime, understand risk, and act before failures escalate. Your SCADA keeps doing what it does. We add the eyes that watch it.

REQUEST A DEMO SEE THE PLATFORM

Predictive failure analytics
Behavioral models per asset class — learn normal, flag drift.
Asset health scoring
One number per pump, valve, breaker. Trend it, rank it, act on it.
Radio & PLC diagnostics
Score the comms path itself — RSSI, packet loss, watchdog cadence.
Alarm prioritization
Suppress nuisance noise. Surface the events that change a decision.
Map-based ops awareness
Geospatial view of every site, with live status painted on the map.
Role-based dashboards
One source of truth — different lens for operator, engineer, exec.

08 / GO DEEPER

Field Guides for Industrial Teams

Short, opinionated reference reads. No fluff, no marketing white papers in disguise — just the concepts an operator, engineer, or executive needs to make better decisions about their SCADA stack.

Updated quarterly · authored in-house

BASICS8 min read