Leuze BCL34, Technical Description

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PROFIBUS
62 BCL 34 Leuze electronic
8.3.12 AutoReflAct (automatic reflector activation) Module 15
The AutoReflAct function uses the scanning beam to simulate a photoelectric sensor and
thus permits an activation without additional sensory mechanism . This is achieved by
directing the scanner with reduced scanning beam towards a reflector mounted behind the
conveyor path. As long as the scanner is targeted at the reflector, the read gate remains
closed.
If, however, the reflector is blocked by an object such as a container with a bar code label,
the scanner activates the read procedure, and the label on the container is read. When the
path from the scanner to the reflector has cleared, the read procedure has completed and
the scanning beam is reduced and again directed onto the reflector. The reading gate is
closed.
Notice!
The AutoReflAct function should not be used in connection with Module 46 (Alignment
Mode 1) as this may lead to erroneous functionality.
Parameters
Input Data
Output Data
Parameter Description Rel.
addr.
Data
type
Value Range Default Unit CR to
module
Mode
This parameter activates the function of
the laser scanner.
If "with reading gate control" (2 or 4) is
set as the parameter value, the BCL acti-
vates the reading gate automatically if the
reflector is obscured. 1: Normal (autoReflAct switched off)
2: with reading gate control (raster)
3: Without reading gate control (single-
line)
4: With reading gate control (single-line)
5: without reading gate control (raster)
1 –
Debounce
time
The parameter defines a de-bouncing
time which is implemented in software.
0 … 31 10 ms 15a
Parameter length: 2 bytes
a
b
Input Data Description Rel.
addr.
Data
type
Value Range Default Unit CR to
module
State
Signal state of the
Auto-Refl-Act modules
0.0 Bit
0: Reflector is recognised
1: Reflector is hidden
0 – 15a
Input data length: 1 byte
c
Output Data Description Rel.
addr.
Data
type
Value Range Default Unit CR to
module
Reflector
search
Switches the alignment mode on
or off.
0.0 Bit
0 -> 1: reflector search on
1 -> 0: reflector search off
0 – 15a
Save reflector
position
1)
Stores the value defined in the
alignment in the parameter set.
0.1 Bit 0 -> 1: position is stored 0 –
15a
15c
Output data length: 1 byte
1) This bit should only be set from 0 -> 1 if the status "reflector detected" (0) is shown in the input data.
d
e