Siemens SIMATIC MV500 Operating Manual page 31

Parameter Possible values
(Max.) Exposure
1 ... 10000 µs
•
time
4 ... 10000 µs
•
(Max.) Bright- 10 ... 250
ness
Trigger delay 0 ... 10000 ms
Table 5- 11 Relationships and dependencies of the parameters
Parameter
Auto
"A" button
Max. exposure time
Max. brightness
Exposure time,
Brightness
SIMATIC MV500
Operating Manual, 05/2019, C79000-G8976-C495-02
Default
80 (10000)
128 (250)
0
Dependency
Program > Image acquisition
•
Program > Image acquisition
•
Program > Image acquisition
•
Program > Image acquisition
•
Description
(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".
(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.
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.
Description
Automatic exposure control can be selected only:
Can only be set if no verification reference is selected.
The "A" button only works:
When exposure is "Manual".
•
When no verification reference is selected or the
•
"From reference" check box is cleared.
Can only be set if no verification reference is selected.
Can only be set if no verification reference is selected.
Application
5.1 Program
31