I. JANCD-C Series Overview (C = CPU/Control)

Brand: YASKAWA (Yaskawa Electric)

Series Positioning: Main CPU board / Central Control Board (System "Brain")

Applicable Generations:

Yasnac J50 CNC System (Old Model NC)

Motoman MRC / XRC Early Robot Controllers

Compatible with JANCD-BB01 / BB02 / BB03 / BB50 Backplanes

Typical Submodels:

JANCD-CP50 / CP50B → J50 CNC Main CPU JANCD-CP01B → Yasnac i80 CNC CPU

JANCD-C (reduced version) → MRC/XRC Simple CPU

II. Detailed Specifications of JANCD-CP50 / CP50B (Most Common JANCD-C Type)

1. General Information

Model: JANCD-CP50 / JANCD-CP50B

Part Number: DF8203678-A0 (REV.A / B)

Type: 32-bit CNC / Robot Main CPU Control Board

Weight: Approximately 0.9kg

Size: Approximately 200×150×25mm

2. Core Functions

System Control: Executes G-code / Robot Motion Program

Axis Control Management: Controls 4-8 Servo Axes (Position / Speed / Torque)

I/O Scheduling: Manages Digital I/O, Analog Quantity, Relays

Communication Processing: RS-232, Ethernet, Fieldbus

Interrupts and Logic: Real-time Multi-tasking, Safety Interlock, Emergency Stop Handling

3. Hardware Specifications

Power Supply: 24V DC ±10% (Backplane Power Supply)

Power Consumption: ≤12W

Processor: 16/32-bit CISC Control Chip

Memory:

RAM: 512KB ~ 2MB (Battery Backup)

Flash/ROM: 1~4MB (System Firmware)

Bus: J50 Special Parallel Bus (Compatible with BB50 Backplane)

Interfaces:

Teaching Device / Operation Panel Interface

RS-232C (Programming / Host Computer)

Encoder Feedback Interface

Battery Holder (To Maintain RAM Data)

LED: PWR, RUN, ALM (Status / Fault)

Environment: 0~45℃, 10~80% RH (No Condensation)

4. Applicable Systems

Yasnac J50 Series CNC (Lathes, Milling Machines, Grinding Machines)

Yaskawa MRC Early Robot Controller

JANCD-BB50 8-slot Backplane Dedicated CPU

5. Compatible Board Cards (BB50 Rack)

CPU: JANCD-CP50 / CP50B

Servo: JANCD-SV50 / SV51

I/O: JANCD-IO50 / IO51

Communication: JANCD-COM50

Backplane: JANCD-BB50

III. JANCD-C (Reduced Basic Version)

Model: JANCD-C (No Suffix)

Positioning: Early MRC/XRC Simple CPU / Control Board

Slots: BB01/BB02 8-slot Backplane Dedicated

Function: Basic 4-6 Axis Control, Small Programs, Basic I/O

Status: Out of Production, Mostly Used for Old Equipment Maintenance Replacement

IV. Relationship with Your Previous Models (Comparison) Table

Model Type Compatible Backplane Operating System

JANCD-CP50/B CPU Board BB50 J50 CNC

JANCD-BB50 8-slot Backplane — J50 CNC

JANCD-BB03 14-slot Backplane — XRC/NX100

JANCD-1003E XRC CPU Board BB03 XRC

V. Common Faults and Maintenance

RUN does not light up / cannot start: CPU failure, battery dead, RAM lost

ALM red light constantly on: Bus error, servo failure, I/O short circuit

Cannot communicate: RS-232 chip damaged, baud rate / address error

Program lost: Backup battery (3.6V)失效

If you are actually referring to a specific C-ending or C-starting model (such as CP50， CP01B， JANCD-C)， please tell me the complete model. I can provide you with a pure text， detailed， and image-free product specification sheet in the format of BB03/BB50 as before.