Minimum Load
The minimum load required for
automatic taring of the container
weight on the platform (first weight),
or for automatic printout of results,
is configured in the operating menu
under:
Appl O: 3.5.
You can choose from 10 settings,
ranging from
1 digit (no minimum load)
to
1000 digits
Example: If the scale interval (d) is
1000 g and the minimum load is set
to 1000 digits (=1000 scale intervals),
a load of at least 1000 g is required
for autotaring.
Display
The result of a measurement is shown
either as a weight value or in relation
to the target.
– Weight display mode:
The measured value line always shows
the weight value, even if it lies outside
the tolerance range.
The bar graph is displayed with symbols
indicating lower limit, target and upper
limit. The bar shows a logarithmic
display of the current load if the weight
is anywhere from 0 to the minimum
load, and a linear display for weights
beyond that range.
– Tolerance limit display mode:
As “Weight display" above, with the
exception that:
–
LL is shown on the main display
if the weight value is lower than
the target, and
–
HH is shown on the main display
if the weight value is higher than
the target
Digital Input/Output Interface +
Optional I/O
The Checkweighing application sup-
ports the digital input/output interface.
The 4 control outputs are activated
as follows (see also the diagram on the
right):
– Lighter
– Equal
– Heavier
– Set
or with YDO01M-IO
Configuration in the operating menu:
CTR OUT
8.24
8.24.1 Weighing instrument
ready to operate
8.24.2 Weighing instrument
stable
8.24.3 Weighing instrument
overflow (“H")
8.24.4 Weighing instrument
underflow (“L")
8.24.5 Value in tare memory
8.24.8 Lighter
8.24.9 Equal
8.24.10 Heavier
8.24.11 Set
Under:
Appl O: 4.4.
you can define whether these
control ports are
– off,
– always on,
– active at stability,
– active within the checking range, or
– active at stability within the checking
range
The “SET" output normally changes
its voltage level when the load is near
the target weight. Alternatively, you
can assign the “Operative" function
(indicating “Ready-for-use") to this
port. Configuration:
Appl O: Section 4.3.
For example, you can use this function
to show the weighed or measured
result on a simple external indicator.
All data output ports have a high
voltage level when:
– the application has not been initialized,
– the weighing instrument is not at
stability and one of the “at stability ..."
parameters is selected
– The weight is not within the
checkweighing range
– Activation of port lines: always on
– Activation of port lines: always on
Digital Input/Output Interface
– <SET> control output: set
Digital Input/Output Interface
– <SET> control output: set
– Activation of port lines:
within checkweighing range
Output Port Specifications
– When not in use, the voltage
level is high: >3.7 V/+4 mA
– When activated, the voltage level is low:
<0.4 V/–4 mA
!The data outputs are not protected
from short circuits.
71
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