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1.4
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Devices Required for Sequence Control
In this section, let's learn how sequence control work. The following devices are required for sequence control.
| Device | Description |
|---|---|
| Input device | Device that humans operate (such as a start switch and a stop switch) Device that detects the machine status (such as a sensor and a proximity switch) |
| Control device | Device that controls input devices and output devices, and sends commands to drive a machine (such as a programmable controller) |
| Output device | Device that drives a machine (such as a motor and a solenoid valve) Device that shows the machine status (such as an indicator lamp and a warning buzzer) |