Commissioning and configuration
126
BCL 504
i
Leuze electronic
10.8
Result Format
In the following various modules for the output of decoding results are listed. They have the
same structure but different output lengths. The PROFIBUS module concept does not cater
for modules of variable data length.
Notice!
Modules 20 … 27 are, thus, to be regarded as alternatives and should not be used in
parallel.
Modules 30 … 40, on the other hand, can be combined freely with the decoding result
modules.
10.8.1
Module 20 – Decoder state
Description
The module indicates the state of the decoding and of the automatic decoder configuration.
Parameters
None
Input data
Input data
Description
Addr. Data type
Value range
Init
value
Unit
Reading gate
state
The signal indicates the current
state of the reading gate
1)
.
1)
Attention
: This does not necessarily correspond to the state at the time the barcode is
scanned.
0.0
Bit
0: Off
1: On
0
-
New result
The signal indicates whether a
new decoding has occurred.
0.1
Bit
0: No
1: Yes
0
-
Result state
The signal indicates whether the
barcode has been read success-
fully.
0.2
Bit
0: Successful read-
ing
1: NOREAD
0
-
Further results in
the buffer
The signal indicates whether fur-
ther results are in the buffer.
0.3
Bit
0: No
1: Yes
0
-
Buffer overflow
The signal indicates that result
buffers are occupied and the
decoder rejects data.
0.4
Bit
0: No
1: Yes
0
-
New decoding
Toggle bit indicates whether
decoding has occurred.
0.5
Bit
0->1:
New result
1->0:
New result
0
-
Result state
Toggle bit indicates that the bar-
code has not been read.
0.6
Bit
0->1:
NOREAD
1->0:
NOREAD
0
-
Waiting for
acknowledgement
This signal represents the internal
state of the control.
0.7
Bit
0: Base state
1: Control waiting
for acknowl-
edgement from
the PROFIBUS
master
0
-
Table 10.18:
Input data for module 20