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2. Programmable logic controller - Wikipedia

   en.wikipedia.org/wiki/Programmable_logic_controller

   A programmable logic controller (PLC) or programmable controller is an industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis.

3. IEC 61131-3 - Wikipedia

   en.wikipedia.org/wiki/IEC_61131-3

   Part 3 of IEC 61131 deals with basic software architecture and programming languages of the control program within PLC. It defines three graphical and two textual programming language standards: Ladder diagram (LD), graphical; Function block diagram (FBD), graphical; Structured text (ST), textual

4. Sequential function chart - Wikipedia

   en.wikipedia.org/wiki/Sequential_function_chart

   Basic Batch SFC, with important elements labeled. Main components of SFC are: Steps with associated actions; Transitions with associated logic conditions; Directed links between steps and transitions. Steps in an SFC diagram can be active or inactive. Actions are only executed for active steps. A step can be active for one of two motives:

5. Industrial control system - Wikipedia

   en.wikipedia.org/wiki/Industrial_control_system

   A feedback control loop is directly controlled by the RTU or PLC, but the SCADA software monitors the overall performance of the loop. For example, a PLC may control the flow of cooling water through part of an industrial process to a set point level, but the SCADA system software will allow operators to change the set points for the flow.

6. IEC 61131 - Wikipedia

   en.wikipedia.org/wiki/IEC_61131

   Standard IEC 61131 is divided into several parts: [3]. Part 1: General information. It is the introductory chapter; it contains definitions of terms that are used in the subsequent parts of the standard and outlines the main functional properties and characteristics of PLCs.

7. Operational technology - Wikipedia

   en.wikipedia.org/wiki/Operational_Technology

   The term usually describes environments containing industrial control systems (ICS), such as supervisory control and data acquisition (SCADA) systems, distributed control system (DCS), remote terminal units (RTU) and programmable logic controllers (PLC), as well as dedicated networks and organization units. The built environment, whether ...

8. Ladder logic - Wikipedia

   en.wikipedia.org/wiki/Ladder_logic

   The key to understanding the latch is in recognizing that the "Start" switch is a momentary switch (once the user releases the button, the switch is open again). As soon as the "Run" solenoid engages, it closes the "Run" NO contact, which latches the solenoid on. The "Start" switch opening up then has no effect.

9. PLC technician - Wikipedia

   en.wikipedia.org/wiki/PLC_Technician

   PLC technician educational courses and programs integrate PLC programming with mechanics, electronics and process controls, They also commonly include coursework in hydraulics, pneumatics, robotics, DCS, SCADA, electrical circuits, electrical machinery and human-machine interfaces. Typical courses include math, communications, circuits, digital ...