Siemens SIMATIC MV500, Руководство по эксплуатации

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Application
5.1 Program
SIMATIC MV500
Operating Manual, 05/2019, C79000-G8976-C495-02
31
Parameter Possible values Default Description
(Max.) Exposure
time
• 1 ... 10000 µs
•
4 ... 10000 µs
80 (10000) (High limit for the) Shutter time of the sensor
Depending on the value set under "Exposure", you specify
the exposure time or the maximum exposure time. The ad-
justable value range of the exposure time depends on the
ring light used and the selected mode ("Image acquisition >
Lighting"). If no ring light is used, the maximum value is
14000 µs.
If objects are moving quickly or if there is oscillation, select
short times to avoid a "shaky image".
(Max.) Bright-
ness
10 ... 250 128 (250) (High limit for the) Brightness
Depending on the value set under "Exposure", you specify
the brightness or the maximum brightness. The value speci-
fied here has an effect on the values of the "Image acquisi-
tion > Trigger" group.
Higher values result in a brighter image and better contrast. If
the cells are very small, however, the noise in the image
must be taken into account as a disturbance factor.
Trigger delay 0 ... 10000 ms 0 The trigger signal is delayed by the specified time.
Note
If the feed speeds are variable, the use of a trigger delay
changes the position of the object in the image in a manner
that can lead to read errors when the image section is exited.
The trigger delay is disabled in image acquisition mode "Au-
to-trigger". The value set here is ignored.
Table 5- 11 Relationships and dependencies of the parameters
Parameter Dependency
Description
Auto
• Program > Image acquisition
Automatic exposure control can be selected only:
Can only be set if no verification reference is selected.
"A" button
•
Program > Image acquisition
The "A" button only works:
•
When exposure is "Manual".
• When no verification reference is selected or the
"From reference" check box is cleared.
Max. exposure time
Max. brightness
• Program > Image acquisition
Can only be set if no verification reference is selected.
Exposure time,
Brightness
•
Program > Image acquisition
Can only be set if no verification reference is selected.