Description
FANUC A20B-2100-0390 PCB / FSSB Basic I/O Module
The A20B-2100-0390 from FANUC is a FSSB BASIC I/O MODULE PCB (input/output control board) used in CNC systems for managing machine signals, communication, and system interfacing between the CNC controller and drive units.
Detailed Product Description
The FANUC A20B-2100-0390 is an industrial I/O interface PCB designed for integration within FANUC CNC control systems. It belongs to the A20B-2100 series, which is widely used for handling machine input/output signals, servo communication, and system-level coordination.
This board acts as a basic I/O module for FSSB (FANUC Servo Serial Bus) systems, enabling reliable communication between CNC controllers and servo drives. It ensures that control signals, feedback data, and machine status information are accurately processed and transmitted.
It is commonly installed in CNC control cabinets and drive systems, where it plays a key role in machine operation, safety interlocking, and motion control synchronization.
Key Features & Functions
FSSB Basic I/O Module PCB
Handles servo bus communication and input/output signal processing.
CNC System Interface Board
Acts as a communication bridge between CNC controller, servo drives, and machine peripherals.
Reliable Signal Processing
Ensures accurate transmission of control signals for stable machine operation.
Part of A20B-2100 Series Architecture
Used across FANUC CNC systems for modular control and drive integration.
Industrial-Grade Design
Built for continuous operation in harsh manufacturing environments.
Technical Overview (General)
- Model: A20B-2100-0390
- Type: FSSB I/O PCB / Interface Board
- Series: FANUC A20B-2100
- Function: Input/output control + servo communication
- Application: CNC machine tools and automation systems
- Installation: Inside CNC control cabinet or drive unit
- Configuration: Internal PCB (non-standalone component)
Applications
- FANUC CNC machining centers
- Servo drive communication systems
- Industrial automation equipment
- Machine tool control cabinets
- CNC maintenance and repair systems
Important Notes
-
- This is an internal control module, not a standalone device.
- Often supplied as new, refurbished, or replacement PCB for CNC repair.
- Part of the A20B-2100 I/O and control family, with multiple closely related variants (0391, 0392, etc.).