Systems Integration and Modernization
Tetra Tech Digital Systems’ certified integrators, engineers, and developers deliver intelligent, resilient automation systems across greenfield and brownfield environments.
Our engineers are fluent in IEC 61131-3 and 61499 programming and understand how each manufacturer uniquely implements those standards. Every project benefits from a functional specification written before any code is developed that defines what the controller manages, how it communicates with other devices, and what the expected behavior looks like under every condition. It keeps the scope clear, reduces rework, and becomes a lasting reference for operators and maintenance personnel.
Our SCADA recommendations are guided by more than product familiarity. We evaluate each platform based on its ability to scale with our clients’ operations, integrate seamlessly with existing infrastructure, and support long-term reliability and performance. Our team holds the highest-tier certifications across all leading SCADA and programmable logic controller (PLC) manufacturers, giving us the insight to recommend solutions with confidence and the technical depth to implement them effectively. This expertise enables us to design systems that not only meet current needs, but also position our clients for future growth, greater efficiency, and stronger operational control.
- PLC and distributed control system (DCS) programming across every major control system platform
- Human machine interface (HMI) and operator interface terminal (OIT) configuration using high-performance graphics for operator stations and consoles
- Functional specifications to reduce development risk and cost
- Full SCADA lifecycle support with architecture, configuration, alarms, and visualization
- Design and fabrication of main PLC and remote terminal unit (RTU) panels, distributed input/output (I/O), annunciator panels, and custom-made enclosures
- Safety control systems that are engineered to protect personnel, equipment, and processes
- Bespoke, special-purpose solutions for mobile equipment, mining, scientific, and defense applications
- Commissioning and startup services, factory acceptance test (FAT), site acceptance test (SAT), and project management
Connect with us. Reach out to our digital systems experts.