A-3-3 Ethercat Communications - Omron NJ501-1400 User Manual

Term
following error
following error reset
cam profile curve
cam data
cam data variable
cam table
override
jerk
A-3-3 EtherCAT Communications
Term
CAN application protocol over Ether-
CAT(CoE)
CAN in Automation(CiA)
EtherCAT Technology Group
Object)
Object Dictionary
Process Data
Process Data Object
Service Data Object
Receive PDO
Transmit PDO
Device Profile
NJ-series CPU Unit Motion Control User's Manual (W507)
The difference between the command current position and actual current position.
There is a following error only in position control mode. (Other modes do not have a
command current position.)
The following error is also called the following error counter value and the remaining
pulses.
Setting the following error to zero.
A curve that shows the relationship between phases and displacements in a cam
operation.
The cam profile curve is created on the Sysmac Studio.
Data made up of phases (master axis) and displacements (slave axis) for cam oper-
ation.
A structure array variable for cam data. It contains phases and displacements and is
defined as a structure array.
A data table that contains cam data.
Use the Sysmac Studio to download the cam profile curves that you created with the
Cam Editor to the CPU Unit to save them as cam tables in the non-volatile memory
in the CPU Unit.
A function that allows the operator to temporarily change programmed values during
operation.
The rate of change in the acceleration or deceleration rate.
If you specify the jerk, the velocity graph will form an S-curve for acceleration and
deceleration.
Jerk is also called jolt, surge, and lurch.
A CAN application protocol service implemented on EtherCAT.
CiA is the international users' and manufacturers' group that develops and supports
higher-layer protocols.
The ETG is a global organization in which OEM, End Users and Technology Provid-
ers join forces to support and promote the further technology development.
An abstract representation of a particular component within a device, which consists
of data, parameters, and methods.
A data structure addressed by Index and Subindex that contains description of data
type objects, communications objects and application objects.
Collection of application objects designated to be transferred cyclically or acyclically
for the purpose of measurement and control.
A process data (I/O data) object that exchanges data at regular periods with CoE.
CoE asynchronous mailbox communications where all objects in the object dictionary
can be read and written.
A process data object received by an EtherCAT slave.
A process data object sent from an EtherCAT slave.
A collection of device dependent information and functionality providing consistency
between similar devices of the same device type.
Description
Description
Appendices
A-17