GE A16B-3200-0042 Main CPU Board

The A16B-3200-0042 from GE Fanuc functions as the main CPU board for RJ-2 robot control systems. It houses the central processor and system memory for robot motion coordination. This board executes control algorithms for servo drives and peripheral devices. Industrial facilities depend on its processing power for precise robotic operations.

Technical Specifications & Hardware Details

Specification	Detail
Manufacturer	GE Fanuc
Model Number	A16B-3200-0042
Category	Main CPU Board / RJ-2 Main CPU PCB
Processor	32-bit microprocessor with floating-point coprocessor
Memory	1 MB DRAM, 2 MB Flash ROM
Weight	Approximately 0.65 kg (1.43 lbs)
Dimensions (H x W x D)	10.5 in x 9.0 in x 1.2 in (267 mm x 229 mm x 30 mm)
Interface	Backplane connector with auxiliary I/O headers
Component Count	Multi-layer PCB with processor, memory, and support logic
Energy Storage	Lithium battery for SRAM retention

Processing Architecture and Motion Control

The A16B-3200-0042 features a 32-bit microprocessor optimized for real-time robot control. Its floating-point coprocessor handles complex kinematic calculations with high precision. You can rely on this board for coordinated multi-axis motion and trajectory planning. Furthermore, the design includes dedicated hardware for servo loop closure. This hardware ensures consistent positioning accuracy during high-speed operations.

Physical Construction and Board Layout

This main CPU board features a multi-layer PCB construction for signal integrity. Its gold-plated edge connector provides reliable electrical contact with the backplane. The A16B-3200-0042 includes test points and status LEDs for diagnostic purposes. You can install this board in the main controller rack with standard mounting hardware. The board layout separates analog, digital, and power sections for noise immunity.

System Integration and Memory Management

The module interfaces with I/O boards and servo amplifiers through the system backplane. Its onboard lithium battery maintains SRAM contents during power-down conditions. The A16B-3200-0042 stores robot programs, configuration data, and system parameters in non-volatile memory. For similar industrial applications, static trip units and protective relays use comparable processor board principles. However, this CPU board specifically addresses robot control requirements within the GE Fanuc RJ-2 ecosystem. Facilities rely on it for reliable execution of robotic workcells and automated manufacturing processes.