Terminology
Term Description
PMAC The acronym for Programmable Multi-Axis Controller.
Motion control Motion control can achieve intended operation by providing a target value to the axis to be con-
trolled, or by controlling state transitions.
Axis A functional unit within the Motion Control Function Module. An axis is assigned to the drive
mechanism in an external Servo Drive, etc.
NC The acronym for Computerized Numerical Control.
A method to numerically control machining processes in production by using computers. CNC has
been further automatized over conventional numerical control machine tools (NC machine tools).
G-code A type of language used to create NC programs.
CPU Central Processing Unit. Hardware that executes instructions from computer programs.
MODBUS/TCP A protocol used for the Modbus communications on TCP/IP.
EtherCAT The acronym for Ethernet for Control Automation Technology.
EtherCA
T is the real-time Ethernet protocol standards.
ENI file ENI is the acronym for EtherCAT Network Information.
The ENI file contains the network configuration information related to EtherCA
T slaves.
ESI file ESI is the acronym for EtherCAT Slave Information.
The ESI file contains information unique to the EtherCA
T slaves in XML format.
PMAC3 Style
DSPGate3 IC
Motion control IC developed by the U.S. company Delta Tau Data Systems, Inc.
Gate3 index IC index for PMAC3 Style DSPGate3 IC.
Gate3 index is set with the DIP switch of the Unit.
If index is i, the CPU Unit accesses the CK3W Unit with Gate3[i] data structure.
DirectPWM A Servo Drive interface unique to Delta Tau Data Systems, Inc.
FilteredPWM Method for creating analog output by smoothing the PWM pulse.
TrueDAC Method for creating analog output using a DA converter.
Serial encoder An encoder that uses communications to perform data transfer.
Digital quadrature en-
coder
A type of encoder that outputs pulse signals.
Sinusoidal encoder A type of encoder that outputs SIN/COS waveforms at 1 Vpp.
Encoder loss detec-
tion function
Function that detects if encoder is not connected.
Hall sensor A sensor that detects the rotor position of the motor by detecting the magnetic field.
Terminology
28
CK3M-series Programmable Multi-Axis Controller User's Manual Hardware (O036)
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