GE A16B-1212-0901/12B CPU PCB | Fanuc CNC Main Board

The A16B-1212-0901/12B serves as the main processor board for GE Fanuc CNC systems. This PCB executes control logic and manages all machine tool operations. You can rely on it for precision machining and automation tasks.

Key Technical Parameters

The table below lists all essential technical specifications for this control main CPU PCB.

Specification	Details
Part Number	A16B-1212-0901/12B
Product Type	Control Main CPU PCB
Compatibility	GE Fanuc Series CNC systems
Processor Type	32-bit RISC microcontroller
Program Memory	2 MB flash
Data Memory	1 MB RAM
Retentive Memory	64 KB EEPROM
Number of Axes	4 controlled axes
Feedback Interface	Incremental encoder (differential)
Digital I/O Capacity	64 inputs / 48 outputs
Dimensions (W x H x D)	280 mm x 220 mm x 35 mm
Weight	Approx. 0.88 kg
Connector Type	Multiple pin headers and edge connectors
Number of Components	28 ICs, 65 capacitors, 90 resistors
PCB Material	FR4 with conformal coating
Operating Temperature	0°C to 55°C

Physical Characteristics and Installation

This control main CPU PCB weighs approximately 0.88 kg for secure rack mounting. Its dimensions measure 280 mm x 220 mm x 35 mm for CNC controller cabinets. First, align the A16B-1212-0901/12B with the backplane guides. Then, press firmly until the board seats completely. Finally, secure the board using the top and bottom retaining screws. A conformal coating protects the PCB from moisture and dust.

Processing and Memory Specifications

The A16B-1212-0901/12B integrates a 32-bit RISC microcontroller for high-speed processing. Program memory provides 2 MB of flash for non-volatile firmware storage. Data memory includes 1 MB of RAM for real-time variables. Retentive memory uses 64 KB of EEPROM for critical parameters without battery backup. The board controls 4 axes for advanced CNC machine configurations.

I/O Capacity and Component Layout

This CPU board supports 64 digital inputs for machine status signals. Forty-eight transistor outputs drive actuators and indicator lamps. The board contains 28 integrated circuits for logic, communication, and servo control. Sixty-five capacitors provide power filtering and noise suppression. Ninety resistors establish proper signal levels and termination. The A16B-1212-0901/12B requires both 5V DC and 24V DC power supplies.