EDH0162En1040 – 06/99 1.6
MM4005 Introduction
1.2.2 Terminology
The following is a brief description of terms specific to motion control and
this instrument that are used in this manual.
1.2.2.1 Axis
A logical name for a motion device.
1.2.2.2 Controller
In this manual refers mostly to the MM4005 controller/driver.
1.2.2.3 Encoder
Displacement measuring device, term usually used for both linear and
rotary models.
1.2.2.4 Function key
One of the four keys associated with the display; its function is determined
by the current menu.
1.2.2.5 Home (position)
The unique point in space that can be accurately found by an axis, some-
times called origin.
1.2.2.6 Home search
A specific motion routine used to determine the home position.
1.2.2.7 Index pulse
A precision, encoder generated pulse, used in the home search algorithm.
1.2.2.8 Jog
Undetermined length motion initiated manually.
1.2.2.9 MM4005 controller
Refers to the MM4005 integrated controller/driver.
1.2.2.10 Motion device
An electro-mechanical motion device.
1.2.2.11 Move
Motion to a destination initiated manually or remotely.
1.2.2.12 Origin
Used sometimes instead of home.
1.2.2.13 Origin switch
A switch that determines an approximate point in space, used in the home
search routine.
1.2.2.14 PID
Type of closed-loop control algorithm.
1.2.2.15 Remote
In this manual refers to the mode of operation where communication is
performed over a computer interface link.
1.2.2.16 Stage
The most common type of motion device for the MM4005, used inter-
changeably in this manual for rotary and linear positioners.
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