Terminology - Omron NX-ID User Manual

Terminology

Terminology
Term
application layer status, AL status
CAN application protocol over Ether-
CAT
CAN in Automation
Communications Coupler Units
CPU Rack
DC time
device profile
device variable
distributed clock
EtherCAT slave controller
EtherCAT slave information
EtherCAT state machine
EtherCAT Technology Group
I/O map settings
I/O port
I/O refreshing
index
network configuration information
NX bus
object
object dictionary
30
Abbre-
viation
--- Status for indicating information on errors that occur in an application on
a slave.
CoE A CAN application protocol service implemented on EtherCAT.
CiA CiA is the international users' and manufacturers' group that develops
and supports higher-layer protocols.
--- The generic name of an interface unit for remote I/O communications on
a network between NX Units and a host network master.
--- A rack to which a CPU Unit is mounted. For an NX-series NX1P2 CPU
Unit, a CPU Rack has a CPU Unit with NX Units and an End Cover
mounted to it.
--- Time indicated by the clock shared between the CPU Unit and the NX
Units in a CPU Rack for an NX-series NX1P2 CPU Unit. EtherCAT
slaves that support distributed clock synchronization have a clock that is
shared by all slaves in the network. The time that is based on this distrib-
uted clock is called the DC time. The same clock is shared by an
NX-series NX1P2 CPU Unit, NX Units connected to the CPU Unit, and
applicable EtherCAT slaves.
--- A collection of device dependent information and functionality providing
consistency between similar devices of the same device type.
--- A variable that is used to access a specific device through an I/O port by
an NJ/NX-series CPU Unit or NY-series Industrial PC. Process data on
an EtherCAT slave is allocated to this variable. For an NX-series NX1P2
CPU Unit, I/O data for the NX Units on a CPU Unit is allocated. A user
application on a CPU Unit or Industrial PC accesses a device that can
be connected, by directly reading and writing this device variable.
DC Clock distribution mechanism used to synchronize EtherCAT slaves and
the EtherCAT master.
ESC A controller for EtherCAT slave communications.
ESI An XML file that contains setting information for an EtherCAT slave.
ESM An EtherCAT communications state machine.
ETG The ETG is a global organization in which OEM, end users, and technol-
ogy providers join forces to support and promote the further technology
development.
--- Settings that assign variables to I/O ports. Assignment information
between I/O ports and variables.
--- A logical interface that is used by the NJ/NX-series CPU Unit or
NY-series Industrial PC to exchange data with an external device (slave
or Unit).
--- Cyclic data exchange with external devices that is performed with prede-
termined memory addresses.
--- Address of an object within an application process.
--- The EtherCAT network configuration information held by the EtherCAT
master.
--- The NX-series internal bus.
--- An abstract representation of a particular component within a device,
which consists of data, parameters, and methods.
OD Data structure that contains description of data type objects, communi-
cation objects and application objects.
Description
NX-series Digital I/O Unit User's Manual (W521)