FANUC A16B-3200-0210 CPU Board A16B32000210 A16B-32OO-O21O

A16B-3200-0210 | FANUC Series 18 Model C Main CPU Board — Intel i486DX2 / 66MHz / 32-bit / 6-Axis / 18-MC / 18-TC / 180-MC

Series 18C — The Last of the Pre-i Generation

The FANUC Series 18 Model C (FS18C) represents the final iteration of the Series 18 CNC platform before the transition to the 18i (i-generation) hardware. The Model C introduced the Intel i486DX2 processor — a significant upgrade from the earlier 8-bit and 16-bit processors used in the Series 18 Model A and Model B — while retaining the fundamental architecture of the Series 18 product family.

Machines built on the 18-C platform are still in active production service. The A16B-3200-0210 is the master board for these systems — the central PCB that all SMD option modules connect to, and the board that determines the physical limits of what the 18-C CNC can be configured to do.

Key Specifications

Nine Module Slots — System Configuration Through SMD Modules

The A16B-3200-0210 is supplied as a generic base board without any SMD (Surface Mount Device) plug-in modules. The board's nine module slots accept the modules that define the specific system's capability:

• SRAM module: Battery-backed parameter and programme storage
• Flash ROM (FROM) module: System software and long-term programme storage
• DRAM module: Working memory for CPU processing
• Servo control module: Axis control interface
• Servo interface module: FSSB or Type-A servo bus connection
• Spindle control module: Analogue or digital spindle interface
• Peripheral I/O module: Machine I/O interface
• CRT/LCD display module: Display control interface
• Communication module: RS-232, RS-422, or Ethernet options

This modular design is why the board is "supplied with no SMD modules" — the combination of modules makes the board specific to a particular machine and CNC type. The generic A16B-3200-0210 board accepts any valid combination of these modules to match the installed machine's original configuration.

Application Scenarios

18-MC machining centre main board failure: A machining centre with FANUC 18-MC CNC fails to boot. After confirming power supply integrity, the A16B-3200-0210 is identified as the failure point. Fitting a replacement board — with the original SMD modules re-installed — followed by a parameter restore from backup returns the machining centre to production.

18-TC turning centre board replacement: A turning centre's main board develops an intermittent fault causing random resets. The A16B-3200-0210 replacement board restores stable operation with the existing SMD modules and CNC software.

CNC maintenance overhaul: An older 18-MC machining centre undergoes a comprehensive CNC overhaul. The A16B-3200-0210 is replaced as part of a board-level renewal while all SMD modules are inspected and reinstalled.

FAQ

Q1: What SMD modules must be ordered separately to complete a full A16B-3200-0210 system?

The modules needed depend on the specific 18-C CNC configuration. At minimum: a FROM module (CNC system software), an SRAM module (parameters and programmes), and a DRAM module (working memory). Servo, spindle, and communication modules depend on the machine's axis count and drive type. Identify the installed module types from the original main board before ordering replacements — the module part numbers are printed on each SMD module label.

Q2: Is the A16B-3200-0210 compatible with the Series 16C CNC?

The A16B-3200-0210 is confirmed for the Series 18C/18M/T platform. While some sources list this board under Series 16/18 Model B documentation, the Series 16C and 18C use related but distinct main board hardware. " Confirm the target CNC model — 16C or 18C — before ordering, as adjacent board part numbers serve the 16C.

Q3: What is the maximum programme storage capacity achievable with this board?

Programme storage is determined by the FROM and SRAM modules installed on the A16B-3200-0210 — not by the main board itself. The board's nine module slots accept various FROM capacity modules, and SRAM modules of different sizes determine the number and size of programmes storable with battery backup. The combination of FROM and SRAM modules defines the total programme storage configuration of the system.

Q4: Does fitting the A16B-3200-0210 require all parameters and programmes to be re-entered?

Yes, if the SMD modules are not carried over from the failed board. The SRAM module retains parameters and programmes (with battery backup). If the SRAM module from the original board is intact and transferred to the replacement A16B-3200-0210, the CNC data is preserved. If the SRAM module has also failed, a complete restore from backup is required. This is why regular parameter backup is essential maintenance practice.

Q5: Can a RISC processor option be added to the A16B-3200-0210 for enhanced performance?

Some FANUC CNC systems offered optional RISC co-processor boards to accelerate specific functions — primarily high-speed contouring and advanced look-ahead. The A16B-3200-0210's module slots can accommodate these option boards. Check the FANUC Series 18C connection and maintenance manuals for the full list of supported option boards and their installation requirements.