The FANUC A02B-0321-B500 is an LCD-mounted CNC Basic Unit documented for the FANUC Series 0i Mate-D. When configured with milling-control software, it is commonly identified as a FANUC 0i Mate-MD control basic unit.

FANUC maintenance documentation classifies the A02B-0321-B500 as a “Basic Unit (No Slot).” It houses the control-side hardware used to execute CNC and PMC functions but does not represent a complete plug-and-run CNC system by itself. The LCD/MDI unit, operator panel, servo hardware, software, memory contents and machine-specific configuration must be matched separately.

• 100% function tested before shipment
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• Testing video provided upon request

Product Details

Brand: FANUC
Part Number: A02B-0321-B500
Alternative Format: A02B0321B500
CNC Series: FANUC Series 0i Mate-D
Common Milling Designation: FANUC 0i Mate-MD
Official Product Type: Basic Unit (No Slot)
Hardware Structure: LCD-Mounted Type CNC
Expansion Slots: None
Primary Role: CNC and PMC control processing
Power Input: 24 VDC
Product Series: A02B-0321
Category: FANUC CNC Control Unit / 0i Mate-D Basic Unit
Testing: Inspected and function tested under an applicable FANUC configuration
Repair: Repair evaluation available
Core Exchange: Available subject to unit condition and stock

Control Function

The A02B-0321-B500 forms the basic control section of a compatible 0i Mate-D installation. The installed main board and memory hardware store and execute FANUC control software, PMC data and machine-specific settings required by the CNC.

The exact controlled axes, CNC options, servo configuration and machine functions are not defined by the A02B-0321-B500 number alone. They depend on the installed main board, FROM/SRAM module, software edition, option status, parameters, PMC ladder and machine-tool builder configuration.

No-Slot Configuration

FANUC distinguishes the A02B-0321-B500 from slotted 0i basic units. This model is documented as a no-slot 0i Mate basic unit, so optional boards intended for a separate expansion-slot structure cannot be assumed to fit.

A02B-0321-B510 is another documented no-slot 0i Mate basic-unit number. Similar series and construction do not confirm direct interchangeability; the complete hardware and software configuration must be checked.

0i Mate-MD and 0i Mate-TD Clarification

The same basic-unit number may appear in market listings for both 0i Mate-MD and 0i Mate-TD systems. The milling or turning designation depends on the installed CNC software and system configuration. For an 0i Mate-MD replacement, confirm the CNC identification screen, software series and existing backup rather than relying only on the outer A02B number.

Compatibility Note

Before ordering, verify the A02B-0321-B500 number, 0i Mate-D model, M-series software, installed A20B main-board number, FROM/SRAM module, display and MDI model, connector arrangement, servo interface, software version and enabled options.

Back up the SRAM data, CNC parameters, PMC parameters and ladder, programs, offsets and other machine data before removing the original control whenever the system condition permits.

Common Use Cases

Replacement of a faulty FANUC 0i Mate-MD basic unit
Repair of a 0i Mate-D control that does not start
Replacement after main-board or control-hardware failure
Restoration of a compatible LCD-mounted CNC control
Preparation of a tested A02B-0321-B500 spare
Maintenance of legacy FANUC 0i Mate-D systems

Sales & Support

Each A02B-0321-B500 is inspected and function tested before delivery. REACO CNC provides configuration checking, backup guidance, repair evaluation, core exchange and testing-video support for FANUC 0i Mate-D control systems.

Worldwide delivery is available through DHL, UPS, FedEx and other international express carriers.