What is the acronym for the human-machine interface used on the system?

What is the acronym for the human-machine interface used on the system?

• A. HMI
• B. SCADA
• C. DCS
• D. PLC

Answer: (A)

The concept here is the interface that lets an operator interact with the control system. The acronym for that human–machine interface is HMI. An HMI is the display and input layer that shows process data, alarms, and trends, and it allows the operator to input commands or adjust setpoints to influence the system. SCADA refers to a broader supervisory control and data acquisition system that can include HMIs as part of its interface, but SCADA itself isn’t the acronym for the interface used on the system. DCS stands for distributed control system, which is a type of control network focused on automatic control across many controllers. PLC is a programmable logic controller, the device that executes the control logic. So, for the specific interface the operator uses to monitor and interact with the system, HMI is the correct acronym.

The concept here is the interface that lets an operator interact with the control system. The acronym for that human–machine interface is HMI. An HMI is the display and input layer that shows process data, alarms, and trends, and it allows the operator to input commands or adjust setpoints to influence the system.

SCADA refers to a broader supervisory control and data acquisition system that can include HMIs as part of its interface, but SCADA itself isn’t the acronym for the interface used on the system. DCS stands for distributed control system, which is a type of control network focused on automatic control across many controllers. PLC is a programmable logic controller, the device that executes the control logic.

So, for the specific interface the operator uses to monitor and interact with the system, HMI is the correct acronym.