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Commissioning and configuration
202
BCL 548
i
Leuze electronic
Flow diagrams
Successful reading:
Unsuccessful reading:
PLC Photoelectric
sensor
BCL 548
i
Description
Time
Photoelectric sensor from 0
1
The photoelectric sensor is interrupted.
M 1010 bit 0.0 0
1
Activation bit 0.0 is set to 1. This acti-
vates the reading gate.
M 1023 bit 0.1 from 0
1
M 1023 bit 0.2 = 0
M 1023 byte 1 = data length
M 1023 byte 2 to 12: result
The bar codes that have been read are
processed and transmitted by module
1023:
Reading concluded bit 0.1 = 1 and bar
code not decoded bit 0.2 = 0.
The data length is entered in byte 1, in
this case 9 decimal.
The decoding result is transmitted in
the following 11 bytes.
Internal processing
Internal data processing.
M 1010 bit 0.0 1
0
Activation bit 0.0 is reset to 0.
PLC photoelectric
sensor
BCL 548
i
Description
Time
Photoelectric sensor from 0
1
The photoelectric sensor is interrupted.
M 1010 bit 0.0 0
1
Activation bit 0.0 is reset to 1.
Photoelectric sensor from 1
0
The reading gate elapses without read
result.
M 1010 bit 0.0 1
0
Activation bit 0.0 is reset to 0.
M 1023 bit 0.1 from 0
1
M 1023 bit 0.2 from 0
1
M 1023 byte 1 = data length
M 1023 byte 2 = result
The module decoding state signals:
Reading concluded bit 0.1 = 1 and bar
code
not
decoded bit 0.2 = 1.
The data length is entered in byte 1.
The result hex 3F ("?" = no read) is
transmitted.
Internal processing
Internal processing of the data and sig-
naling of the non-reading.