
Electrical Connection
Leuze
electronic
90
Technical Description BCL 90
Leuze electronic
7.5.5 Connect the PC
The BCL is operated and configured with the PC software BCL-Config. To this end, it has to be con-
nected to the PC via the service interface (auxiliary interface). In contrast to the host interface, the
service interface has a permanent data format and a predefined data transmission rate. Figure 7.3
shows the circuitry of the service interface. The cable length should not exceed 10 m.
Figure 7.3: Circuitry of the service interface
1.
Turn on the PC and the supply voltage of the MA 90.
2.
Connect the PC with the internal, 9-pin "Service" plug of the MA 90.
Use an RS 232 connection cable for this (RxD and TxD crossed).
- or -
in case no MA 90 is used: connect the PC acc. to Figure 7.3.
3.
Turn on the PC and the supply voltage of the MA 90.
4.
Adjust the communication parameters.
7.5.6 Connect the Switched Inputs
Connect the switched input "SE 1"
Should a read process of the BCL be triggered through an external sensor, the reading cycle sensor
is to be connected to the switched input "SE 1". The type of triggering is selected as base setting of
the BCL. Figure 7.4 shows the circuitry of the switched input "SE 1". Table 7.15 contains the charac-
teristics for this input.
Figure 7.4: Circuitry of the switched input "SE 1"
• Connect the reading cycle sensor as shown in Figure 7.4.
RxD
TxD
GND
TxD
RxD
GND
2
3
5
(3)
(2)
(5)
BCL
Host
RS-232
()=9-pin D-Sub plug on the PC
Sensor
IN GND
GND
GND
GND
OUT
2k6
1
3
9
5
1
3
9
5
V
S
V
S
V
S
V
S
BCL
p-n-p sensor
Switch
V
S
= DC +18 … +30 V for BCL without heater, DC 24 V +20% / -10% for BCL with heater
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