Expert PLC &
SCADA Engineering
For Any Platform.
QAS engineers program, commission and modernise PLC and SCADA systems across all major platforms — Siemens, Allen-Bradley, Beckhoff, Schneider and more. New builds, upgrades, migrations and multi-vendor integrations.
Every Major PLC & SCADA
Platform. One Team.
Our engineers are trained and certified across all major control system brands — so you never need a different vendor for a different PLC.
Allen-Bradley / Rockwell
ControlLogix • CompactLogix • MicroLogix • FactoryTalk View • Studio 5000
Siemens
S7-300 / S7-400 / S7-1200 / S7-1500 • TIA Portal • WinCC • Simatic HMI
Mitsubishi & Omron
MELSEC iQ-R / Q / F • Omron NX / NJ • GX Works • Sysmac Studio
FactoryTalk View (FT View)
Rockwell Automation • FT View SE • FT View ME • PanelView Plus
FT Optix
Rockwell Automation • FactoryTalk Optix • Modern HMI • Web-Based
Ignition SCADA
Inductive Automation • Unlimited Licensing • Web-Based • Gold Certified
What We Engineer for You
From greenfield PLC programming to brownfield SCADA modernisation — our engineering team covers the full control system lifecycle.
PLC Programming
Structured, documented PLC programs in Ladder, FBD, ST and SFC — following IEC 61131-3 standards. New builds, modifications and reverse engineering of legacy programs.
SCADA & HMI Development
Intuitive SCADA screens and HMI panels on Ignition, WinCC, FactoryTalk and Vijeo Citect — with live process visualisation, alarm management and historical trending.
Control System Upgrades
Migration of obsolete PLCs (S5, SLC 500, PLC-5) to modern platforms — with full I/O mapping, program conversion and commissioning. Minimum production downtime.
Alarm Management
ISA-18.2 alarm rationalisation, priority management and shelving — reducing nuisance alarms by up to 70% so operators focus on what matters.
Safety Systems (SIL)
Safety-rated PLC programming (GuardLogix, S7-F, PILZ) — SIL 2/3 compliant, IEC 62061 and EN ISO 13849 machinery safety with full functional safety documentation.
Remote Access & Support
Secure VPN-based remote access to your control systems — 24/7 troubleshooting, program modifications and SCADA support without waiting for an engineer on site.
Ageing System vs Modernised Control
What changes when you replace obsolete PLCs and paper-based control with modern, connected systems engineered by QAS.
How We Deliver Every Project
Engineering Review
We review existing PLC code, I/O lists, P&IDs and SCADA screens. Any gaps are identified and documented before engineering starts.
Design & FAT
Full system design — program structure, HMI layouts, alarm philosophy. Factory Acceptance Test completed before shipping.
Commission & SAT
On-site installation, wiring checks and Site Acceptance Test. Parallel run where required. Zero production surprises.
Handover & Support
Full documentation package, operator training and 24/7 remote support from day one. You own every line of code.
Engineering Standards We Follow
Obsolete PLC? Unreliable SCADA?
We Fix It — Fast.
Talk to a QAS control systems engineer. We will review your existing setup, identify the risks and recommend the fastest path to a modern, reliable system — with minimum production disruption.