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3-7

3 EtherCAT Communications

NJ/NX-series CPU Unit Built-in EtherCAT Port User’s Manual (W505)

3-1 EtherCAT Communications Types and Settings

3-1-4 Settings Required for EtherCAT Communications

For EtherCAT communications, you must set the following network configuration information from the

Sysmac Studio and download it to the CPU Unit.

• Network configuration: Master and slave configuration

• EtherCAT master settings: Parameters settings, such as the Fail-soft Operation Setting or Wait Time

for Slave Startup

• Process data information: Allocation information for slave PDO data

Additional Information

EtherCAT communications cannot be performed unless the correct network configuration infor-

mation is downloaded to the CPU Unit.

Refer to Section 5 Setting Up EtherCAT Communications with the Sysmac Studio for details.

Allocated

variables

Axis Variables These are structure variables for I/O and parameters for Servo Drive and

encoder input slaves.

You can change the names of these variables.

System-

defined vari-

ables

System-defined

variables for

EtherCAT master

These variables are defined by the system for communications parameters,

communication status, and other functions. You cannot change the names

of these variables.

3-1-4 Settings Required for EtherCAT Communications

Variable type Description

EtherCAT

Servo Drive

EtherCAT master

EtherCAT

slave

Allocated.

Axis Variable A

Axis Variable B

CPU Unit

Omron NX102 series User Manual

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