What Is Ethercat; Object Dictionary - Omron R88M-K Series User Manual

Suppressing Vibration of Low-rigidity Mechanisms during Acceleration/
Deceleration
The damping control function suppresses vibration of low-rigidity mechanisms or devices
whose tips tend to vibrate.
Two damping filters are provided to enable switching the damping frequency automatically
according to the rotation direction and also via an external signal. In addition, the settings can
be made easily by setting the damping frequency and filter values. You are assured of stable
operation even if the set values are inappropriate.

What Is EtherCAT?

EtherCAT is an open high-speed industrial network system that conforms to Ethernet (IEEE
802.3). Each node achieves a short cycle time by transmitting Ethernet frames at high speed.
A mechanism that allows sharing clock information enables high-precision synchronization
control with low communications jitter.
EtherCAT is a registered trademark of Beckhoff Automation Gmbh (Germany). EtherCAT
technology is protected by patents.

Object Dictionary

OMNUC G5-series Servo Drives with Built-in EtherCAT Communications use the object
dictionary for CAN application protocol over EtherCAT (CoE) as a base for communications.
An object is a special data structure inside a device that consists of data, parameters, and
methods.
An object dictionary is a data structure that describes the data type objects, communications
objects, and application objects.
All objects are assigned four-digit hexadecimal numbers in the areas shown in the following
table.
Indexes
0000 to 0FFF hex
1000 to 1FFF hex
2000 to 2FFF hex
3000 to 5FFF hex
6000 to 9FFF hex
A000 to FFFF hex
OMNUC G5-series AC Servomotors and Servo Drives User's Manual (with Built-in EtherCAT Communications)
Area
Data Type Area
CoE Communications Area
Manufacturer Specific Area 1
Manufacturer Specific Area 2
Device Profile Area
Reserved Area
Contents
Definitions of data types.
Definitions of variables that can be used by all
servers for designated communications.
Variables with common definitions for all
OMRON products.
Variables with common definitions for all
OMNUC G5-series Servo Drives (servo
parameters).
Variables defined in the Servo Drive's CiA402
drive profile.
Area reserved for future use.
1-1 Outline
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1-2