Camera Operation & Features
27
PixeLINK PL-A780
Document No.: 04646-01
MACHINE VISION CAMERA
SYSTEM GUIDE
Copyright © 2004 PixeLINK
All Rights Reserved
5 Camera Operation & Features
5.1 Supported IIDC 1.31 Features
The PL-A780 camera is IIDC 1.31 compliant. All registers and communications follow the
IIDC 1.31 specification. Advanced Control and Status Registers (CSRs) are provided to
support custom features.
This section describes the features and controls of the PL-A780 camera. For each feature,
the set of values that define the feature in the IIDC specification are provided. In addition,
information not included in the IIDC specification is provided to improve usability.
The camera supports all the features listed here. Any IIDC feature not listed is not supported.
Features that are specific to a particular camera model are so indicated. The following
information defines the feature:
•
Auto – whether the feature can be controlled automatically. E.G. Auto
exposure can maintain the correct exposure during changing illumination;
•
Manual – whether the feature can be controlled manually. E.G. the Exposure is
set to 10 ms;
•
One-time Auto – whether the feature can be controlled automatically for a short
period and then returned to manual mode. E.G. the exposure is set
automatically for the current illumination settings and then fixed at that value;
•
Off – whether the feature can be turned off;
•
Change in Descriptors (CiD) – whether the feature settings can change
between frames with descriptors;
•
Parameters – whether the feature requires parameters. Each parameter has a
name, unit of measure, and a type (relative or absolute);
•
Min value;
•
Max Value;
•
Default; and
•
Step size.
5.1.1 Camera Initialization
The PL-A780 camera can be initialized on command. On initialization, the camera will load
the configuration parameters stored in Memory Channel 1. When the camera is delivered,
the configuration in Memory Channel 1 matches the factory defaults in Memory Channel 0.
Memory Channel 1 parameters can be set by the user so that the camera can be initialized to
a user-defined state. This allows the camera to be configured on one system and then used
on another computer without the need for camera configuration files on the two systems.
The camera can be initialized on command to the settings in Memory Channel 0 (factory
defaults) or Memory Channel 1. See Section 5.1.3.5 on page 32 for more information.
The following table shows the factory default settings for the controllable camera features of
the PL-A782.
Table 9 Default settings for PL-A780 features
