• The PLC controller is an industrial‑grade controller made for rugged applications. Bartley Energy CW control systems use easy‑to‑diagnose 0-10VDC analog and 0/24vdc discrete industry‑standard hardwired low voltage signals for equipment control rather than less reliable Wi‑Fi or complex communication protocols such as ModBus, LonWorks, or BACNet – which are okay for data transfer and some non-critical status reporting but not as good for critical system control.
• This aids an AC technician with a simple voltmeter and no knowledge of complex communication protocols to monitor and diagnose.