The ABB PM862K02 controller does support CPU redundancy. This design is aimed at achieving higher availability, not limited to the CPU, but also includes CEX-Bus, communication interfaces, and S800 I/O. The existence of redundant systems means that when the main CPU fails, the backup CPU can immediately take over, ensuring the continuity and stability of the system.
In addition, the motherboard of the PM862 controller is equipped with two RJ45 Ethernet ports (CN1, CN2) for connecting to the control network and two RJ45 serial ports (COM3, COM4). One of the serial ports (COM3) is an RS-232C port with a modem control signal, while the other port (COM4) is isolated and used to connect configuration tools.
Overall, the ABB PM862K02 controller provides users with highly reliable and flexible control solutions through its support for CPU redundancy and diverse connection ports.