SCADA (supervisory control and data acquisition) is used by manufacturers across numerous industries and applications to remotely monitor and automate the control of industrial processes and machines. SCADA systems accomplish these functions by integrating with networks, PLCs, RTUs, sensors, and machines to collect, analyze, translate, and display real-time data.

Data Acquisition

SCADA systems acquire machine data through networked devices and sensors connected to a PLC or RTU. These devices and sensors measure parameters such as temperature, speed, pressure, or weight as raw data. The data is then sent to a PLC or RTU, where it is translated into comprehensible and actionable information. Finally, the information is sent to an HMI and displayed to operators to analyze or act on.


Automated process control based on defined set-points is another SCADA function. SCADA systems can be programmed to perform certain control decisions based on the parameters received from connected sensors. For example, if SCADA detects an abnormal condition in the process, such as power loss to a machine, and also detects an alarm that the machine’s back-up battery power doesn’t have a charge, the SCADA system could perform a control function to automatically turn on a generator to restore power. Additional SCADA control functions may include turning power on or off, increasing or decreasing speed and flow, raising or lowering temperature, and more.


When abnormal conditions occur within a process, SCADA systems can trigger alarms to notify operators that something is wrong. Alarm notifications may be presented to operators in the form of audible sounds, lights, graphical displays, email/SMS, or phone calls. Additionally, alarms can be programmed with different levels of priority to help differentiate major system errors from minor issues. It’s a good practice to assign appropriate priority levels to alarms to ensure severe problems aren’t ignored and the proper response is performed. For example, assigning the highest priority level to most or every alarm may prevent operators from being able to identify a major issue from minor events.

Data Communications

SCADA systems may use wired or wireless communication technologies, as well as different communication protocols to transmit data between machines and operators. Common non-proprietary communication protocols include distributed network protocol (DNP3), Modbus, and IEC 60870-5. There are also numerous proprietary protocols specific to certain SCADA vendors. Additionally, SCADA systems typically utilize either closed local area networks (LANs) for local geographical areas, or wide area networks (WANs) for systems that need to connect multiple local area networks that are spread across different regions.

Components of a SCADA System

SCADA systems are comprised of numerous hardware and software components working together to collect, translate, and display data. SCADA hardware typically includes data collection devices such as sensors and relays, data processing devices, such as a PLC or RTU, and data display devices such as an HMI or monitor. Alternatively, SCADA software analyzes and translates the collected data into useful information to be distributed to operators. SCADA software is also responsible for executing programmed control and alarming functions. Depending on the system, predictive maintenance and machine learning can also be accomplished with SCADA software.

Inputs and Sensors

Inputs and sensors are integral to the control function of a SCADA system. These inputs and sensors can be analog or digital and are responsible for measuring and controlling the status and parameters of a machine or device. Additionally, inputs can handle simple binary commands, such as on or off, as well as control more complex commands such as adjusting flow, temperature, pressure, etc.

Conversion Units: PLCs and RTUs

PLCs or RTUs collect data from inputs and sensors and translate that data into information that can be used by the SCADA system and understood by operators. PLCs or RTUs also receive signals back from the SCADA system to facilitate control functions. For example, the SCADA system may detect high pressure in a line and relay to the PLC that a pressure-reducing valve needs to be opened. The PLC would then send the command to open the valve.


HMIs display actionable information collected from networked devices and sensors. The information is often displayed in the form of graphical pictures representing real-world objects, such as a pump or tank, as well as data charts, tables, and performance reports. Once displayed on an HMI, operators are able to analyze the information and make data-driven decisions to optimize the efficiency and output of their production process.

About Process Solutions

Located near Seattle, Washington, Process Solutions is the Northwest’s largest control systems integrator. With 30+ years in business and over 100 engineers and technicians on staff, Process Solutions has the experience and capacity to take on almost any automation project. Process Solutions provides a wide range of control system services, including industrial electrical control panels, PLC and HMI programming, machine automation systems, energy management and refrigeration systems, supervisory control software, and machine monitoring software.

SCADA System
Vaclav Mydlil
Sr. Director of Advanced Automation
Vaclav leads the dynamic Energy Management and Refrigeration Division at Process Solutions. With an impressive 20 years of experience in power demand management and refrigeration control systems, Vaclav is the driving force behind one of the company’s most innovative systems.

His expertise extends to PLC and cloud-based systems, ensuring seamless integration and optimal performance. Vaclav’s commitment to excellence is underscored by his Master of Science degree, specializing in control systems and electrical engineering, which he earned from the University of Life Sciences in Prague, Czech Republic.

Beyond the office, Vaclav’s passions include kayaking, snow skiing, and woodworking. Most of all, he enjoys moments spent with his wife and three kids.
Steve Pelton
Vice President of Sales
With over 20 years at Process Solutions, Steve Pelton has held various roles, including Sales Engineer, Sales Director, and his current position as Vice President of Sales.

In addition, Steve oversees Process Solutions’ Energy Management and Refrigeration Division — ensuring the company remains at the forefront of energy-efficient solutions that cater to diverse food production applications. Steve also spearheads the strategic development of the company’s machine monitoring solutions, aligning them with client needs and market trends.

Steve’s background includes mechanical engineering, but his career trajectory has mainly focused on control systems marketing and management. His ability to bridge technical expertise with business acumen has been instrumental in Process Solutions’ growth.

Outside the office, Steve passions include conquering rugged trails on his mountain bike, perfecting his golf swing, and exploring new destinations with his family.
Matt Barnes
Chief Financial Officer
Matt, with 28 years of financial strategy and accounting experience, plays a pivotal role at Process Solutions. As the Chief Financial Officer (CFO), he spearheads the company’s growth strategy, ensuring financial stability and health.

Beyond traditional financial management, Matt also oversees strategic initiatives aimed at optimizing Process Solutions’ on-hand inventory costs and availability. By fine-tuning inventory management, Matt ensures the company can meet client needs efficiently and maintain a healthy bottom line.

Matt graduated with a degree in accounting from Western Washington University and previously served as a financial executive at a large retail corporation. Outside of work, Matt enjoys traveling, soccer and spending time with his family.
Kevin Orr
Executive Vice President
Kevin boasts an impressive tenure of over 25 years at Process Solutions. His position in the company has been multifaceted, spanning roles as a project engineer, engineering manager, and Process Solutions’ first Executive Vice President.

Under Kevin’s leadership, the food processing division has flourished, earning its reputation as of the most respected in the industry. Today, Kevin closely collaborates with executives from leading food processors and food processing equipment manufacturers across the country.

Kevin is a devoted husband and father with a passion for international travel.
Todd Busby
Chief Executive Officer
Todd has dedicated over 30 years to Process Solutions, where he has worn multiple hats—from panel builder to project engineer and sales representative.

As the CEO of Process Solutions, Todd has spearheaded significant transformations. Under his leadership, the company has diversified into new industries, acquired a world-class facility, and more than doubled its size.

Todd, a native of the Puget Sound region, is a devoted husband, father, and avid outdoorsman. When he’s not at work, you’ll find him supporting his three kids in all their pursuits or hunting and fishing in Eastern Washington.
David Crumpley
David has dedicated over 15 years to Process Solutions, where he has served as a Senior Engineer, Vice President, and now Chief Operating Officer. His multifaceted experience spans technical expertise, strategic leadership, and operational efficiency.

As the head of Process Solutions’ Water/Wastewater division, David orchestrated the modernization of the company’s internal systems and boosted operational efficiency across the organization.

In his current role as President, David continues to drive innovative initiatives aimed at expanding the company’s reach and further streamlining internal processes.

Outside of work, David enjoys spending quality time with his family and pursuing his passions as an avid outdoorsman.

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