Detection Modes; Object Mode; Teach Objects - Balluff Light Array BLA 50A-001-S115 Betriebsanleitung

BLA 50A-001-S115
Balluff Light Array
4
Operation and mode selection (cont.)
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 binary coded and output on the three digital
outputs:
Decimal Out 3 Out 2
0 0 0
1 0 0
2 0 1
3 0 1
4 1 0
5 1 0
6 1 1
7 1 1
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.
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Out 1 Meaning
0 No object
1 Object 1 detected
0 Object 2 detected
1 Object 3 detected
0 Object 4 detected
1 Object 5 detected
0 Object 6 detected
1 Unknown object
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
analog outputs). The additional count modes Count Obj.
and Count Slit are explained in section
modes.
Off turns off the digital outputs.
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 all three digital outputs are
turned on. 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. Any desired output can then be used.
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
4.3 Configuring the
4.4.4 Count
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