Product Description:

The 0GH-CP153 central processing module belongs to the 0GH PLC Modules series from B&R Automation. It serves as the primary controller inside a compact PLC rack, handling program execution, data exchange, and diagnostic routines for conveyor lines, packaging stations, or stand-alone test benches. By combining volatile and battery-supervised RAM with serial networking ports, the unit coordinates digital and analog I/O points, converts machine states into logical decisions, and forwards commands to downstream actuators in real time.

Core performance relies on 256 kB SRAM of system memory, which holds active variables and the real-time operating system. An additional dual-port region of 64 kB SRAM is reserved for rapid access by intelligent expansion cards, minimizing bus latency during data exchange. The processor completes one instruction every 0.8 microseconds, so typical control loops can be refreshed at kilohertz rates. Electrical demand stays limited to 6 W, allowing the module to be powered directly from the backplane supply without dedicated cooling. Time-stamped tasks use a hardware real-time clock with a resolution of 1 sec, and built-in battery monitoring helps preserve date and time through a mains dropout.

Serial communication is provided by two onboard ports. IF1 is an RS-232 channel that transmits or receives user data at up to 64 kBaud, suited for programming terminals or HMI gateways. IF2 can be configured as RS-485, RS-422, or TTY and reaches a maximum speed of 347 kBaud, enabling multidrop links to remote drives or peer PLCs over twisted pair. Should external power fail, a capacitor preserves SRAM data for at least 10 min, while an optional nickel-cadmium pack extends data retention to roughly 1 week. Because there is no expansion master or NC synchronization function, the CPU relies on standard remote I/O rather than motion-bus or high-speed coprocessor attachments.