Omron NX102 series User Manual

3-3
3 EtherCAT Communications
NJ/NX-series CPU Unit Built-in EtherCAT Port User’s Manual (W505)
3-1 EtherCAT Communications Types and Settings
3
3-1-1 CoE (CAN Application Protocol over EtherCAT)
Additional Information
Object Dictionary
The object dictionary is a data table within the device that interfaces the application and commu-
nications. It describes the information handled by the device. Each piece of information is called
an object. Each object is assigned a 4-digit hexadecimal index.
Each object is divided into a data type area, a CoE communications area, and a manufacturer-
specific area.
Process data communications is used to read and write the process data in the CoE communi-
cations area in these objects.
SDO communications is used to read and write the parameters within the manufacturer-specific
area in these objects.
PDO
SDO
1000 hex
1600 hex
3000 hex
EtherCAT
CANopen device
Communications
Object dictionary
Parameters
Process Data
Device Type
Object contentIndex
Application

Omron NX102 series Specifications

General

Brand	Omron
Model	NX102 series
Category	Controller
Language	English