I. Basic Information

Model: JANCD-JCP01 (Common versions: -3, -4, such as JCP01-4)

Brand: YASKAWA (Yaskawa Electric)

Series: YASNAC J300 CNC (Old model machine system)

Function: CPU mainboard (System core + Motion control)

Standard Equipment: Must be equipped with JANCD-JMM01 (Memory board) to work

Memory: Built-in 384KB RAM, expandable to 2MB with JMM01

Status: Factory discontinued (EOL), available as second-hand / refurbished spare parts in the market

Compatible Backplane: JANCD-JBB12 / JBB03 (The backplane you previously checked for J300)

Yaskawa JANCD-JCP01

II. Core Functions

System Main CPU: J300 system "brain", running CNC system software, PLC logic.

Motion Control: Handles linear / circular interpolation, position loop / speed loop calculations, up to 6–8 axis servo control.

Bus Management: Connects I/O board (JIO06), axis control board, and panel through backplane JBB12.

Data Storage: Comes with 384KB, combined with JMM01 storage system for parameters, processing programs, and tool compensation.

Fault Diagnosis: System self-checking, alarm handling, communication with upper computer.

III. Common Versions and Combinations

JANCD-JCP01-3: Early version, equipped with JMM01-3

JANCD-JCP01-4: Final stable version, equipped with JMM01-1 (Most common)

JMM01 Memory Board: Exclusive to J300, cannot be used alone, available in 256KB/512KB/2MB capacities

IV. Compatibility and Replacement Points

Only for YASNAC J300 control cabinet, completely incompatible with I80 series (FC904).

When replacing, must be of the same version (e.g. -4 replaces -4), and reinstall system programs + parameters.

Common Faults: No power on, system freeze, servo alarm, program loss, mostly due to CPU board or JMM01 failure.