SCADA & HMI South Africa | Industrial Automation, Monitoring & Control Systems

Nkokhi Group – SCADA and HMI Systems for Industrial Automation in South Africa

Nkokhi Group supplies and sources SCADA and HMI systems in South Africa for industrial automation, mining, manufacturing, water and wastewater treatment, power generation, utilities, process plants, OEM machinery and infrastructure projects.

Our SCADA and HMI solutions can be integrated with PLCs, PACs, RTUs, industrial networks, instrumentation, VFDs, remote I/O and control systems to provide operators with real-time process monitoring, control, alarms, trends, data acquisition and reporting.

Nkokhi Group can source new, replacement, refurbished and hard-to-find SCADA and HMI equipment, depending on the application and availability. Our existing industrial automation portfolio includes PLC, HMI, SCADA, networking and control infrastructure.

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What Are SCADA and HMI Systems?

SCADA means Supervisory Control and Data Acquisition. A SCADA system collects information from PLCs, RTUs, instruments and other field devices and presents the information to operators through graphical software.

HMI means Human-Machine Interface. An HMI provides a graphical interface that allows operators to monitor and interact with machinery, equipment and processes.

A typical industrial architecture can include:

Field Instruments → PLC / RTU → Industrial Network → HMI / SCADA → Operator / Control Room

SCADA and HMI systems can provide:

Real-time process monitoring
Machine status
Alarm management
Historical trends
Production information
Data logging
Recipe management
Equipment diagnostics
Operator controls
Remote monitoring
Reporting
Process visualisation
Historian functionality
Communication with PLCs and RTUs

Nkokhi Group’s HMI offering covers applications from machine-level operator panels through larger industrial control environments.

SCADA Systems South Africa

Nkokhi Group can source components and equipment for SCADA systems in South Africa, including:

SCADA servers
Operator workstations
Engineering workstations
Industrial PCs
SCADA software platforms
Historian systems
HMI panels
PLCs
RTUs
Remote I/O
Industrial Ethernet switches
Communication gateways
Protocol converters
Data acquisition systems
Alarm management systems
Industrial networking equipment

Common SCADA platforms encountered in industrial applications include:

Siemens WinCC
ABB System 800xA
Schneider Electric EcoStruxure
Rockwell FactoryTalk
AVEVA System Platform
Wonderware
GE / Emerson automation platforms
Yokogawa control platforms

Nkokhi Group specifically lists WinCC, System 800xA, EcoStruxure, FactoryTalk and AVEVA System Platform among SCADA platforms it can support through sourcing and automation requirements.

HMI Systems South Africa

Nkokhi Group supplies and sources industrial HMI systems and HMI panels in South Africa for machine and process applications.

HMI functions can include:

Touchscreen operation
Machine status
Start/stop controls
Alarm displays
Fault diagnostics
Process trends
Setpoint adjustment
Production information
Recipe management
Historical data
Operator authentication
PLC communication
Multi-device communication

Siemens SIMATIC HMI

Common Siemens HMI families include:

SIMATIC HMI KTP400 Basic
KTP700 Basic
KTP900 Basic
KTP1200 Basic
TP700 Comfort
TP900 Comfort
TP1200 Comfort
TP1500 Comfort
TP1900 Comfort
TP2200 Comfort
MTP700 Unified Comfort
MTP1000 Unified Comfort
MTP1200 Unified Comfort
MTP1500 Unified Comfort
MTP1900 Unified Comfort
MTP2200 Unified Comfort

Allen-Bradley / Rockwell HMI

Common PanelView families include:

PanelView 800
PanelView Plus 6
PanelView Plus 7
PanelView 5310
PanelView 5510
PanelView 5000
PanelView 700
PanelView 1000
PanelView 1250
PanelView 1500

Schneider Electric HMI

Common families include:

Harmony ST6
Harmony GTU
Harmony GTUX
Harmony GTO
Harmony GK
Harmony P6
Harmony SCU
Harmony STO
Harmony STU
Magelis HMI
Magelis GTU
Magelis GTO
Magelis GK
Magelis STO
Magelis STU

Mitsubishi Electric HMI

Common Mitsubishi HMI families include:

GOT2000
GT27 Series
GT25 Series
GT21 Series
GOT SIMPLE
GS2107
GS2110
GT2507
GT2510

Omron HMI

Common Omron ranges include:

Omron NA Series
NA5-7W
NA5-9W
NA5-12W
NA5-15W
Omron NB Series
NB5Q
NB7W
NB10W
NS Series

Pro-face HMI

Common Pro-face families include:

GP4000
GP4100
SP5000
LT4000M
GC4000
GP Series
ST Series

Nkokhi Group’s existing HMI sourcing page covers these major HMI families and replacement applications.

Major SCADA & HMI Manufacturers

Nkokhi Group can source SCADA, HMI and industrial automation equipment from leading international manufacturers, subject to specification and availability.

Siemens

SIMATIC WinCC
SIMATIC HMI
Basic Panels
Comfort Panels
Unified Comfort Panels
S7-1200
S7-1500
ET 200

Rockwell Automation / Allen-Bradley

FactoryTalk
PanelView
ControlLogix
CompactLogix
MicroLogix
Micro800
POINT I/O
FLEX I/O

Schneider Electric

EcoStruxure
Harmony HMI
Magelis
Modicon PLC
Modicon M340
Modicon M580

ABB

System 800xA
AC500
CP600 HMI
S800 I/O

Mitsubishi Electric

GOT
MELSEC
iQ-R
iQ-F
FX Series
Q Series

Omron

Sysmac
NA HMI
NB HMI
NX
NJ
CJ
CP Series

AVEVA

AVEVA System Platform
AVEVA InTouch
Historian
Industrial visualisation and supervisory software

Other Manufacturers

Nkokhi Group can also investigate requirements for:

Beckhoff
WAGO
Phoenix Contact
Advantech
Delta
Honeywell
Emerson
Yokogawa
GE
Keyence
Weintek
Pro-face
Moxa
Hilscher
Weidmüller

Our wider automation portfolio includes Siemens, Schneider Electric, Rockwell Automation, ABB, Mitsubishi, Omron, Beckhoff, WAGO, Phoenix Contact and other industrial automation manufacturers.

SCADA & HMI Communication Protocols

SCADA and HMI systems need reliable communication with PLCs, RTUs, drives, instruments and remote I/O.

Nkokhi Group can source equipment supporting communication technologies including:

PROFINET
PROFIBUS
EtherNet/IP
Modbus TCP
Modbus RTU
OPC UA
EtherCAT
CC-Link
CC-Link IE
CANopen
RS-232
RS-422
RS-485
Industrial Ethernet
MQTT on compatible platforms

The correct protocol should be confirmed before selecting replacement hardware. Nkokhi Group also supplies and sources industrial networking equipment, gateways, protocol converters and communication modules.

SCADA & HMI Applications in South Africa

Mining

SCADA and HMI systems are used for:

Crushers
Conveyors
Screens
Pumps
Dewatering
Ventilation
Material handling
Processing plants
Plant monitoring

Water & Wastewater

Applications include:

Water treatment plants
RO plants
Pump stations
Sewage treatment
Filtration
Chemical dosing
Reservoir monitoring
Flow monitoring
Pressure monitoring
Level control

Manufacturing

SCADA and HMI systems can monitor:

Production lines
Packaging
Assembly
Conveyors
Process equipment
Robotics
Machine automation
Production data

Power & Utilities

Applications include:

Power generation
Generator systems
Pump stations
Electrical infrastructure
Substations
Utility monitoring
Remote equipment monitoring

Process Industries

SCADA and HMI can be used for:

Chemical processing
Food processing
Cement plants
Water treatment
Bulk handling
Oil and gas
Pharmaceutical production

PLC, SCADA and HMI Integration

A modern industrial automation system commonly combines several layers.

Field Level

Sensors, transmitters, switches, valves, motors and actuators.

Control Level

PLC, PAC, RTU and remote I/O.

Supervisory Level

HMI and SCADA.

Enterprise / Information Level

Historian, reporting, analytics and other plant information systems.

Nkokhi Group can source equipment across these layers, allowing customers to develop or replace individual components while maintaining compatibility with their existing automation architecture.

SCADA & HMI Replacement Systems

Nkokhi Group can assist with replacement requirements when an existing HMI or SCADA component is:

Obsolete
Discontinued
Damaged
Faulty
No longer supported
Experiencing touchscreen problems
Experiencing display problems
Unable to communicate
Unable to boot
Missing configuration software

For an HMI replacement, it is important to check:

Exact existing model number
PLC manufacturer
Communication protocol
Software environment
Screen size
Panel cut-out dimensions
Supply voltage
Communication ports
IP/NEMA rating
Environmental conditions

Nkokhi Group specifically assists with obsolete and hard-to-find HMI sourcing and replacement requirements.

Tips for Buying SCADA & HMI Systems

1. Confirm the Existing System

Before purchasing a replacement, identify the existing PLC, HMI, SCADA software and communication network.

2. Check the Exact Part Number

Small differences in model numbers can indicate different communication ports, screen sizes, firmware, memory or voltage specifications.

3. Check Communication Compatibility

Confirm PROFINET, PROFIBUS, EtherNet/IP, Modbus, EtherCAT or the required protocol.

4. Check Software Compatibility

For HMI replacements, identify the engineering software used for the existing project.

Examples include:

Siemens TIA Portal / WinCC
Rockwell FactoryTalk View
Schneider EcoStruxure / Vijeo Designer
Mitsubishi GT Designer
Omron Sysmac Studio
Pro-face GP-Pro EX
Weintek EasyBuilder Pro

5. Check Panel Dimensions

A replacement touchscreen must fit the existing panel cut-out unless cabinet modifications are acceptable.

6. Consider Industrial Conditions

Check:

Temperature
Humidity
Dust
Vibration
Water exposure
Chemical exposure
UV exposure
IP rating
Screen brightness

7. Keep PLC and HMI Backups

Maintain current backups of:

PLC program
HMI project
SCADA configuration
Recipes
Parameters
Network configuration
Firmware information
Device settings

8. Consider Future Availability

For critical equipment, select platforms where spare parts and technical support are likely to remain available.

Why Choose Nkokhi Group for SCADA & HMI?

Nkokhi Group provides sourcing support for industrial automation equipment across South Africa.

Our capabilities include:

SCADA systems
HMI panels
PLC systems
PLC I/O
RTUs
Industrial PCs
Industrial networking
Communication modules
Protocol converters
Automation components
Replacement equipment
Obsolete equipment sourcing
Project-specific sourcing

We support applications across mining, manufacturing, water treatment, wastewater, utilities, power generation, process industries and OEM machinery.

Frequently Asked Questions – SCADA & HMI South Africa

What is SCADA?

SCADA stands for Supervisory Control and Data Acquisition. It is an industrial software and hardware architecture used to monitor processes, collect data, manage alarms and provide supervisory control.

What is an HMI?

HMI stands for Human-Machine Interface. It provides operators with a graphical interface for monitoring and controlling machinery or industrial processes.

What is the difference between SCADA and HMI?

An HMI is generally used for machine or local process interaction, while SCADA provides broader supervisory monitoring, data acquisition, alarms, trends, historical data and multi-system visibility.

Does Nkokhi Group supply SCADA systems in South Africa?

Yes. Nkokhi Group can source SCADA hardware, software-related equipment, industrial PCs, servers, operator stations, networking equipment, communication gateways, PLCs, RTUs and associated automation components.

Does Nkokhi Group supply industrial HMI panels?

Yes. Nkokhi Group can source Siemens, Allen-Bradley, Schneider, Mitsubishi, Omron, Pro-face, Weintek and other industrial HMI platforms, subject to availability.

Can you source obsolete HMI panels?

Yes. Nkokhi Group can investigate obsolete and difficult-to-find HMI panels and replacement options.

Can SCADA work with different PLC manufacturers?

Yes. Depending on the SCADA platform and communication drivers, SCADA systems can communicate with PLCs from different manufacturers using technologies such as OPC UA, Modbus, Ethernet/IP and other industrial protocols.

Can you supply HMI replacement panels?

Yes. Provide the existing HMI’s manufacturer, exact model/part number, photographs and PLC information so the correct replacement can be investigated.

Do you supply SCADA and HMI equipment for water treatment plants?

Yes. Nkokhi Group can source automation equipment for water treatment, wastewater, RO plants, pump stations, filtration, chemical dosing, level, flow and pressure control.

Do you supply SCADA and HMI systems for mining?

Yes. SCADA and HMI components can be sourced for mining and mineral-processing applications including conveyors, crushers, pumps, dewatering, ventilation and processing plants.

Request a SCADA & HMI Quotation

Looking for SCADA and HMI South Africa, SCADA systems South Africa, HMI panels South Africa, industrial HMI, SCADA software, PLC HMI systems or replacement automation equipment?

Send Nkokhi Group:

Manufacturer
Model
Part number
Quantity
Application
Existing PLC details
Communication protocol
Photograph of the equipment
Delivery location

Nkokhi Group can investigate availability and provide a quotation based on your technical requirements.

Nkokhi Group – Industrial Automation | SCADA | HMI | PLC | Control Systems

SCADA & HMI South Africa | Industrial Automation | Nkokhi Group