JANCD-B (often simply referred to as JANCD-B) is a bus/communication/interface adapter board for the early MRC/XRC series robot controllers of YASKAWA (belonging to the JANCD series of basic I/O or communication modules). 

I. Basic Information

Brand: YASKAWA (Yaskawa Electric)

Model: JANCD-B (Full model: JANCD-B, no subsequent numbers, early base board)

Part Number: DF8203497-A1 / DF8203497-B1 (REV.A / REV.B)

Product Type: System Bus Adapter / I/O Communication Interface Board (Backplane / Interface Board)

Applicable Systems:

Yaskawa Motoman MRC Robot Controller

Yaskawa Motoman XRC Early Controller

Yasnac LX / MX CNC System

II. Core Functions

Internal Bus Expansion: Connects CPU Board (JANCD-1003 Series) with I/O, Servo, and Axis Control Boards

System Signal Distribution: Power, Clock, Control Signal Routing and Isolation

External Communication Interface: RS-232, Teaching Pendant, Peripheral Port Adapter

Status Monitoring: PWR/RUN/COM Indicator Lights

Electrical Isolation: Internal System and External Signal Isolation, Anti-interference

III. Hardware Specifications

Power Supply: 24V DC ±10%

Power Consumption: ≤8W

Operating Temperature: 0°C ~ +45°C

Storage Temperature: -20°C ~ +60°C

Humidity: 10–80% RH (No Condensation)

Weight: Approximately 0.4kg

Size: Approximately 150 × 100 × 25mm

Installation: Controller Slot Direct Insertion

IV. Interfaces and Indicator Lights

Internal Bus: JANCD Series Backplane Bus

Communication Ports: RS-232C ×1, Teaching Pendant Interface ×1

I/O Expansion: Connects JANCD-1020/1021 and Other I/O Boards

LED: PWR (Green), RUN (Green), COM (Yellow), ALM (Red)

Battery Holder: 3.6V Lithium Battery (Parameter Backup)

V. Product Features

MRC/XRC Core Bus Board: Essential Basic Module of the System

Full Isolation Design: Stable in Strong Electromagnetic Environment

High Compatibility: Universal for Yaskawa Motoman MRC/XRC Full Series

Long Life: Industrial-grade Components, MTBF > 100,000 Hours

Maintenance Simple: LED Status for Quick Diagnosis

VI. Application Scenarios

MRC/XRC Controller Bus Central

CPU and I/O/Servo Board Connection

Repair and Replacement of Old Yaskawa Robots

CNC System Communication Interface Expansion

VII. Related Models

JANCD-1003B/C/D/E (CPU Board)

JANCD-1020 / 1021 (I/O Expansion Board)

JANCD-5TU0 / TU05 (Relay Board)

JANCD-XIO1B (Later I/O Board of XRC)

VIII. Precautions

Installation / Disassembly must be completely powered off, anti-static

Battery Replacement requires power-on operation, avoid parameter loss

Good Grounding (< 4Ω), 24V Stable

Verification of Model JANCD-B and REV.A/B when replacing

It is necessary for me to compile a complete model list + brief function comparison of JANCD-1020, JANCD-1021, JANCD-1001B, JANCD-1003E, JANCD-5TU0, JANCD-B that you previously searched into one? To facilitate your unified reference.