Scale parameters and functions
8.3 DR 3 calibration parameters
SIWAREX WP321
Manual, 07/2014, A5E33715669A-02
49
The weight can only be used with the defined scale interval below the maximum weight (+
9 d, d = scale interval). The maximum weight is defined during commissioning. Exceeding
the maximum weight is indicated in the status (DR30).
The maximum weight depends on the number and type of load cells used.
Calibration weights 0, 1, 2 and calibration digits 0, 1, 2
The calibration weights and corresponding calibration digits define the characteristic curve of
the scales. A detailed description can be found in section Calibration procedure (Page 54).
The scale interval for the weighing range can be defined in accordance with EN 45501
(0.0001 to 50).
Automatic zero adjustment
If required, you can carry out semi-automatic zeroing of the scale using the "Zeroing"
command.
The automatic adjustment sets the scale to zero without a further command in the event of
slow zero drifting. Slow drift is assumed if the OIML R76 criteria are met.
If this function is enabled, the scale may eventually read zero after a slow drift even if they
are fully loaded. The function can, however, be limited by specifying a maximum and
minimum weight for zeroing.
Decimal places for process values
This parameter is used to specify the number of decimal places to which the process values
are to be rounded. This value decouples the main display of the weight values from the
values used in the control software.
The weighing module accepts any external tare specification which is less than the
maximum tare load (percentage of maximum weighing range). Tare commands are also
accepted provided that the current gross weight is less than the configured maximum tare
load.
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