A20B-8101-0100
May 22, 2026

A20B-8101-0100

Part Number: A20B-8101-0100 Manufacturer: FANUC Type: PROFIBUS DP Slave Communication PCB (Robot/CNC) Function: Connects FANUC robot/CNC as a slave to PROFIBUS DP networks Status: Active (in production); new/used/refurbished available Weight: ~0.15 kg Origin: Japan

Description

Compatibility

  • Robot Controllers: R‑30iA, R‑30iB, R‑30iB Plus

  • CNC Systems: 31i‑B, 18i‑B, 0i‑D (mini‑slot compatible)

  • Installation: Mini slot on robot controller mainboard or CNC riser board

  • Protocol: PROFIBUS DP (Slave Mode) – IEC 61158 compliant

Key Specifications

  • Role: PROFIBUS DP slave (controlled by a master PLC)

  • Baud Rate: 9.6 kbps – 12 Mbps (standard PROFIBUS DP)

  • Connector: DB9 (PROFIBUS port)

  • Power: 24V DC via backplane

  • Operating Temp: 0 °C to +55 °C

  • Humidity: 5%–95% RH (non‑condensing)

  • Isolation: Galvanic isolation between controller and network

  • Certifications: CE, UL, CSA

Main Functions

  • PROFIBUS DP Slave Communication: Links FANUC robot/CNC to Siemens/AB PROFIBUS masters

  • Cyclic I/O Exchange: Real‑time digital/analog data exchange (up to 244 bytes I/O)

  • Network Diagnostics: Slave status, error logging, and node monitoring

  • System Integration: Connects FANUC equipment to factory PROFIBUS networks (common in automotive)

Installation & Handling

  • ESD Protection: Anti‑static wrist strap required

  • Power Off: Disconnect controller power before insertion/removal

  • Orientation: Align PCB notch with slot key; insert firmly

  • Cabling: Use shielded PROFIBUS cable; terminate both ends (120 Ω)

Troubleshooting

  • No Link: Check seating, DB9 cable, termination, baud rate match

  • Slave Not Found: Verify node address (1–126), power, and wiring

  • Communication Drops: Check grounding, cable integrity, electrical noise

Related Models

  • A20B-8101-0100: PROFIBUS DP Slave PCB (this part)

  • A20B-8100-0430: PROFIBUS DP Master PCB (for CNC)

  • A20B-8100-0491: DeviceNet Master PCB (for CNC)


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