You can add up to four CK3W Units (or up to two CK3W-AX Units) with the Expansion Rack.
By connecting an analog input type or DirectPWM type Servo Drive to a
CK3W-AX Unit, high-speed
axis control is enabled.
One CK3W-AX Unit controls up to four axes.
With the Expansion Rack, one CK3M-series CPU Unit can connect up to four CK3W-AX Units and
control a maximum of 16 axes in total.
A digital quadrature encoder, serial encoder, or sinusoidal encoder may be connected to the CK3W-
AX Units as encoder input for feedback. The CK3W-AX Units have general digital I/O with 16-point
input and 16-point output.
• EtherCAT Network Configuration
By using the EtherCAT master communications port on the CPU Unit, EtherCAT slaves such as ser-
vo drives, inverters, machine vision systems, digital and analog I/O, and other general-purpose
slaves can be connected.
The CPU Unit also supports connections with EtherCAT Slave Terminals. The EtherCAT Slave Ter-
minal helps you to save space and construct flexible systems using a broad range of types of NX
Units.
However, when OMRON NX-series EtherCAT Coupler Units are used for the EtherCAT Slave Termi-
nal, there are restrictions on the models and unit versions of EtherCAT Coupler Units that can be
connected.
Refer to A-3 Restrictions on Using the NX-series EtherCAT Coupler Unit on page A-8 for details.
• Ethernet Network Configuration
The Ethernet communications port on the CPU Unit supports the Modbus-TCP protocol. It can be
connected to devices such as PLCs and programmable terminals that support the Modbus-TCP pro-
tocol.
• Support Software
Connect a computer with the Support Software installed to the Motion Controller via the Ethernet
network.
Refer to 1-1-3 Support Software on page 1-4 for details of the Support Software.
1 Introduction to Motion Controllers
1-3
CK3M-series Programmable Multi-Axis Controller User's Manual Hardware (O036)
1-1 Features and System Config-
uration
1
1-1-2 Introduction to the System Configurations
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