Balluff BLA 50A-002-S4, Руководство пользователя

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Operation and mode selection (continued)
4.3.3 Multiple objects
Example with presence of multiple objects:
Only the first object from right and from left is detected.
Objects in between are ignored.
Fig. 4-6: Multiple objects in the light band
4.4 Configuring object detection or object count
(digital outputs)
The BLA can be used for the detection and differentiation
of individual objects as well as for counting the objects in
the light band.
Detection and count modes can both be reached via the
item
Digital Outputs
in the main menu.
4.4.1 Detection modes
Up to six objects can be taught. The number of the detec-
ted object is output via the IO-Link process data.
The setting takes place in menu item Digital Outputs .
This has two sub-items.
–
Object mode selects the parameter (edge position,
diameter,…) to be checked.
– Object teach is used for teaching the various objects.
4.4.2 Object mode
Fig. 4-7: Object mode
The same modes can be selected for Object Mode as for
the analog outputs.
The modes that may be selected for object detection and
differentiation are:
Left Obj. ; Left Slit; Right Obj.; Right Slit; Diameter;
Slit; Pos. Obj.; Pos. Slit (cf. section 4.3 Configuring the
analog outputs ). The additional count modes Count Obj.
and Count Slit are explained in section 4.4.4 Count
modes .
Off turns off the digital output.
Under
Tolerance
you can set the permissible tolerance of
the taught value in 0.1 mm increments between ±0.1 mm
and ±2.0 mm. The factory default setting is “Diameter”
mode and a tolerance of ±0.2 mm.
The parameters Mode and Tolerance apply
equally for all objects.
For unknown objects always number "7" is
displayed and output. This applies also if no
object has yet been taught. If the sensor will be
used for simple presence detection (no object
differentiation), it is not necessary to teach
anything.
If an object located in the light path cannot be
definitely associated with a taught number
(distance of the values for two or more taught
objects less than the set tolerance), the smallest
appropriate object number is output.
4.4.3 Teach objects
Up to six objects can be taught (objects numbered 1-6) for
the detection modes. Object number 0 (no object) and 7
(unknown object) are predefined.
These six teachable objects are shown in a table under
Objects :
Number of the object currently
in the light path
Status
Taught value
Object
number
Status:
+
= Object number, active
–
= Object number, not active
T = Teach (teach object)
Fig. 4-8: Teaching objects
BLA 50A-002-S4
Balluff Light Array
BLA 50A-002-S4