Festo SBO Q Series, Руководство пользователя

Страница: 17 / 156

Contents and general instructions
XV
Festo P.BE−SBO−Q−EN en 0702a
Term/abbreviation Meaning
CP valve terminal Type 10 CPV valve terminal or type 12 CPA valve terminal, each with a CP
connection (also regarded as CP modules).
CPI modules CP modules with extended functionality
CPX modules Common term for the various modules which can be incorporated in a
CPX terminal.
CPX terminal Complete system consisting of CPX modules with or without pneumatics.
Depth of field See depth of focus
Depth of focus The spatial area in front of and behind the focussed object which is still
sharp (also known as depth of field). The depth of field depends on the
focal depth of the lens and the set aperture. Short focal depths with
small aperture openings lead to larger depth of field.
Edge−controlled The detection of a signal (e.g. input) reacts to the rising or falling edge.
Ethernet Physical protocol and network for connecting various devices
Exposure time The time during which the CMOS sensor is exposed to light during record
ing. The longer the exposure time, the more light will penetrate. The
choice of exposure time depends e.g. on the movement speed, the light
available and the light sensitivity of the sensor (see also sensor gain).
With moving objects excessive exposure times result in blurred pictures.
Falling edge Transition from logical 1 to logical 0 (falling)
Feature Values defined by the computer (e.g. length) are determined from the
images of a part and are used for making an analysis.
Fieldbus node Provides the connection to specific fieldbuses. Conducts control signals
to the connected modules and monitors their ability to function.
Focal depth Long focal depths create a large image, short focal depths create a
wide−angle image. Lenses with variable focal depths are known as zoom
lenses. Lenses with longer focal depths usually have less depth of focus
and less light intensity.
Gain See sensor gain
I Digital input
Input module Input module
I/O modules Collective term for the modules which provide digital inputs and outputs
(e.g., CPX I/O modules, CP input modules and CP output modules).