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This main CPU board serves as the central processor for GE CNC systems. It executes part programs and manages all axis motion control. The unit mounts inside the CNC cabinet as the primary controller.
Technical specifications
| Parameter | Specification |
|---|---|
| Brand | GE Fanuc |
| Model | GE A16B-3200-0040 |
| Product Family | CNC Series |
| Category | Main CPU Board |
| Processor Type | 32-bit RISC |
| Processor Speed | 66 MHz |
| Program Memory | 4 MB DRAM |
| User Data Memory | 2 MB SRAM (battery-backed) |
| Flash Memory | 2 MB (firmware storage) |
| Communication Ports | 2 x RS-232, 1 x RS-422 |
| Servo Interface | High-speed serial (FSSB) |
| Power Supply | 24V DC external |
| Current Consumption | 400 mA typical |
| Number of Components | 1 PCB, 1 CPU chip, 8 memory ICs, 4 connectors |
| Status Indicators | 3 LEDs (Power, Run, Alarm) |
| Dimensions (L x W) | Approx. 25 cm x 20 cm |
| Thickness | Approx. 2.5 cm |
| Weight | Approx. 0.45 kg |
| Energy Storage | 1 x lithium battery (SRAM backup) |
| Battery Type | CR2032 or equivalent |
| Battery Life | Approximately 3 years |
| Operating Temperature | 0°C to 50°C |
Detailed Technical Analysis
This main CPU board uses a 32-bit RISC processor running at 66 MHz. It executes CNC part programs with high speed and precision. The board contains 4 MB of DRAM for program execution space. An additional 2 MB of battery-backed SRAM stores user parameters and offsets.
Now let us examine its memory architecture. The GE A16B-3200-0040 includes 2 MB of flash memory for firmware. This firmware manages all real-time motion control functions. The board communicates with servo drives via the high-speed FSSB link. Two RS-232 ports connect to programming devices and external equipment.
The board draws 400 milliamps from a 24V DC external supply. A lithium battery preserves the SRAM contents during power loss. The GE A16B-3200-0040 features three status LEDs on its front edge. The Run LED blinks during normal program execution. The Alarm LED illuminates when a system fault occurs.
Installation and Configuration Guidelines
You mount this board into a designated slot in the CNC rack. Use proper ESD precautions when handling the board. Connect the 24V DC power supply to the designated terminal block. The GE A16B-3200-0040 automatically boots upon power application.
Configure the system parameters through the CNC operator panel. You may need to load machine-specific settings from backup. The GE A16B-3200-0040 stores these parameters in battery-backed SRAM. Replace the lithium battery every three years to prevent data loss.
Practical Applications
Engineers use this CPU board for CNC machine tool control. For example, it runs milling machines, lathes, and machining centers. The GE A16B-3200-0040 also controls robotic systems and special purpose machines. Its 32-bit processor handles complex 5-axis contouring operations.
Summary
To conclude, this main CPU board features a 66 MHz RISC processor. It provides 4 MB of DRAM and 2 MB of battery-backed SRAM. Choose GE A16B-3200-0040 for reliable CNC system control.