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Exploring Supervisory Control And Data Acquisition (SCADA)
In the previous chapter, we learned how to monitor and control a machine through a Human-Machine Interface (HMI). An HMI is always close to the machine or Programmable Logic Controller (PLC) – that is, an HMI is always local to the machine, and it is basically meant to control a single machine/PLC. Here in this chapter, we will be learning about Supervisory Control And Data Acquisition (SCADA), which also provides a means of monitoring and controlling along with other functionalities, such as alarms, trending, and logging. However, the screen or PC for monitoring, controlling, or other functionalities can be in a remote place – that is, far away from the machine – and we can have ...
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