CPU Bus Units handle special I/O and communications needs to achieve advanced position control, motion control, and network communications.
There are 9 products of CPU Bus Units.
 CJ-series EtherCAT® Slave Unit
            
            
                CJ1W-ECT21
            
            
               CJ-series EtherCAT® Slave Unit
            
            
                CJ1W-ECT21
            
        
    Hi-speed I/O link based on EtherCAT
![CJ1W-NC[]81 / []82](/Images/l_2643-13-118581-78x78.jpg) CJ-series Position Control Units with EtherCAT interface
            
            
                CJ1W-NC[]81 / []82
            
            
               CJ-series Position Control Units with EtherCAT interface
            
            
                CJ1W-NC[]81 / []82
            
        
    Preeminent control performance and easy operation feature of EtherCAT improve the production efficiency.
 CJ-series EtherNet/IP Unit
            
            
                CJ1W-EIP21S
            
            
               CJ-series EtherNet/IP Unit
            
            
                CJ1W-EIP21S
            
        
    EtherNet/IP unit with tag data link capacity of 180,000 words or more
 CJ-series High-speed Data Storage Unit (SPU Unit)
            
            
                CJ1W-SPU01-V2
            
            
               CJ-series High-speed Data Storage Unit (SPU Unit)
            
            
                CJ1W-SPU01-V2
            
        
    High-speed Collection of System Data
![CJ1W-NC[]71](/Images/l_1528-13-118580-78x78.jpg) CJ-series Position Control Unit with MECHATROLINK-II interface
            
            
                CJ1W-NC[]71
            
            
               CJ-series Position Control Unit with MECHATROLINK-II interface
            
            
                CJ1W-NC[]71
            
        
    Decrease TCO with Simple Operation, Reduced Wiring, Batch Settings, and Batch Management
 CJ-series Serial Communications Units
            
            
                CJ1W-SCU
            
            
               CJ-series Serial Communications Units
            
            
                CJ1W-SCU
            
        
    The Serial Communications Units That Enable High-speed Connections with External Devices. This unit is available for CJ/NJ controller.
 CJ-series Controller Link Units
            
            
                CJ1W-CLK
            
            
               CJ-series Controller Link Units
            
            
                CJ1W-CLK
            
        
    New Controller Link Units, Now with 4,000 Send Words
 CJ-series FL-net Unit
            
            
                CJ1W-FLN22
            
            
               CJ-series FL-net Unit
            
            
                CJ1W-FLN22
            
        
    Connect to Multivendor Controller Networks
 CJ-series DeviceNet Unit
            
            
                CJ1W-DRM21
            
            
               CJ-series DeviceNet Unit
            
            
                CJ1W-DRM21
            
        
    Smallest in the Industry! A DeviceNet Unit for the CJ Series that Boasts Industry-leading Performance and Functions