Terminology - Omron 1 S Series User Manual

Terminology

CAN application protocol over EtherCAT
CAN in Automation
Device Profile
Distributed Clocks
EtherCAT Slave Controller
EtherCAT Slave Information
EtherCAT State Machine
EtherCAT Technology Group
Fieldbus Memory Management Unit
Index
Instance
Object
Object Dictionary
Physical Device Internal Interface
Power Drive System
Process Data
Process Data Object
Receive PDO
safe state
safety control
1S-series with Built-in EtherCAT Communications and Safety Functionality User's Manual (I621)
Abbrevi-
Term
ation
CoE A CAN application protocol service implemented on
EtherCAT.
CiA CiA is the international users' and manufacturers'
group that develops and supports higher-layer proto-
cols.
--- Collection of device dependent information and func-
tionality providing consistency between similar
devices of the same device type.
DC Method to synchronize slaves and maintain a global
time base.
ESC A controller for EtherCAT slave communication.
ESI An XML file that contains setting information for an
EtherCAT slave.
ESM An EtherCAT communication state machine.
ETG The ETG is a global organization in which OEM, End
Users and Technology Providers join forces to sup-
port and promote the further technology develop-
ment.
FMMU Single element of the fieldbus memory management
unit: one correspondence between a coherent logi-
cal address space and a coherent physical memory
location.
--- Address of an object within an application process.
--- When there are the several same functions inde-
pendently in objects, each object is called as an
instance.
For example, there are eight instances SS1 com-
mand 1 to SS1 command 8 in SS1 command.
--- Abstract representation of a particular component
within a device, which consists of data, parameters,
and methods.
OD Data structure addressed by Index and Subindex
that contains description of data type objects, com-
munication objects and application objects.
PDI A series of elements to access data link services
from the application layer.
PDS A power drive system consisting of a Servo Drive, an
inverter, and other components.
--- Collection of application objects designated to be
transferred cyclically or acyclically for the purpose of
measurement and control.
PDO Structure described by mapping parameters that
contain one or several process data entities.
RxPDO A process data object received by an EtherCAT
slave.
--- The status of a device or piece of equipment when
the risk of danger to humans has been reduced to an
acceptable level.
--- A type of control that uses devices, functions, and
data that are designed with special safety measures.
Terminology
Description
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