THEORY OF OPERATION-CONTINUED
Programmable Logic Control (PLC)
The Programmable Logic Control (PLC) (Figure 9, Item 1) is used to centralize control of most CBL
components. A touchscreen-equipped Human Machine Interface (HMI) (Figure 9, Item 2) is used to
allow operator control and monitoring of CBL systems and components. An emergency stop (Figure 9,
Item 3) is also provided to allow for quick shutdown of CBL systems under unusual circumstances.
Figure 9. Programmable Logic Control.