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Glossary www.emersonct.com 129
15 Glossary
µs
Microsecond, which is 0.000001 seconds.
A
Amps.
Amplifier
Servo Drive.
ARMS
Amps Root Mean Squared (RMS).
Axis
The full system to control in a single motor shaft. A single
SM-EZMotion module with Unidrive SP Drive can
denote an axis.
AWG
American Wire Gauge.
Baud Rate
The number of binary bits transmitted per second on a
serial communications link such as RS-232. (1 character
is usually 10 bits.)
Check Box
In a dialog box, a check box is a small box that the user
can turn “On” or “Off” with the mouse. When “On” it
displays an X in a square; when “Off” the square is blank.
Unlike option (radio) buttons, check boxes do not affect
each other; any check box can be “On” or “Off”
independently of all the others.
Complex Motion
A string of multiple motion commands and logical
instructions that form a repeatable operation. For the
SM-EZMotion module, the configuration file defines
complex motion by setups, functional assignments and
programs.
Compound Motion
The combination of indexes in a row in which the
deceleration ramp of the first index goes to the velocity
of the secondary index. The first index must be initiated
within a program (Index.#.CompoundInitiate).
Configuration
The user-created application. It can be saved as a disk
file or downloaded to configure the SM-EZMotion
module. It includes all the user-defined setup,
assignments and programs.
CRC
Cyclical Redundancy Check, the data transfer error
checking mechanism.
Destination
A function (i.e., Stop, Preset) that may be assigned to an
input line. In SM-EZMotion, the input function is
connected to the action through click and drag
operations in PowerTools Software on the Assignment
View.
Dialog Box
A dialog box is a window that appears in order to collect
information from the user. When the user has filled in the
necessary information, the dialog box disappears.
DIN Rail
Deutsche Industrie Norm Rail
DLL
In Microsoft® Windows®, a Dynamic Link Library
contains a library of machine-language procedures that
can be linked to programs as needed at run time.
Downloading
The transfer of a complete set of parameters from an FM
to a drive.
Drive
Servo drive or amplifier.
EEPROM
An EEPROM chip is an Electrically Erasable
Programmable Read-Only Memory; that is, its contents
can be both recorded and erased by electrical signals,
but they do not go blank when power is removed.
EMC
Electromagnetic Compatibility. The relative immunity of
a drive to the effects of electromagnetic fields.
EMI - Electro-Magnetic Interference
EMI is noise which, when coupled into sensitive
electronic circuits, may cause problems.
Firmware
The term firmware refers to software (i.e., computer
programs) that are stored in some fixed form, such as
read-only memory (ROM).
Flash
Another type of EEPROM.
Flash File
In the SM-EZMotion module, this file loads the firmware
into the drive and function module. Flash files can field
upgrade the firmware.
FM
Function Module - device which is attached to the front
of the drive to provide additional functionality.