Berthold LB 442, Operating Manual

Page: 38 / 158

4.2 Evaluation Unit LB 442
36
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Ext. batch measurement start
Start of external batch measurement. Relay 3 must also be set as
Batch Ready.
Start
The measurement starts when the contact is closed. The mass
counter starts at 0 t. Contact of relay 3 is open.
Stop
The measurement stops as soon as the specified batch weight is
reached. Contact of relay 3 is closed. The batch weight obtained is
held until the next start.
Digital input 2 (20a/20c):
o External Tare
o Print start
o External product 3+4
o Start / Stop and print
Input active when terminals are short-circuited.
See also Digital input 2 page 56
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External Tare:
Automatically starts a tare measurement (also in regular meas-
urement operation and saves the result).
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Print start
The actual tonnage is output to the printer. The print row corre-
sponds to a row of the minute printout.
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Product 3+4
Digital input 2 can also be used to expand the external product se-
lection. In this case, different products can be selected as shown in
the table below:
Menu Dig. input 2 Dig. input 3
1 0 0
2 0 1
3 1 0
4 1 1
1 = closed contact
0 = open contact
Table for external product selection 3+4
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Start/Stop and print
If the contact is closed, a tare measurement is carried out first.
Then the measurement automatically changes over to the meas-
urement mode. The measurement mode is interrupted as soon as
the contact is opened. After the measurement, a printout is cre-
ated automatically, including date, time and measured tonnage.