Mettler Toledo MT Guide de l'utilisateur Page 46

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IND780 User’s Guide
Tare types and associated operations available on the IND780 include:
Pushbutton Tare Auto Tare
Keyboard Tare (Preset Tare) Clearing Tare
Table Tare Manual Clear
Net Sign Correction Auto Clear
Pushbutton Tare
Pushbutton tare can be configured in Setup as enabled or disabled. When this
feature is disabled, the TARE scale function key
cannot be used to obtain a
tare.
If pushbutton tare is enabled, pressing the pushbutton TARE scale function key
initiates a semi-automatic tare. The IND780 will attempt to perform a tare
process. If it is successful, the display changes to a zero net weight indication and
the previous weight on the scale is stored as the tare value. The net mode will be
indicated on the display.
Several conditions could inhibit the pushbutton tare function:
Motion—Pushbutton tare cannot be taken when the scale is in motion. If
motion is detected when a pushbutton tare command is received, the IND780
will wait up to three seconds for a no-motion condition. If a stable (no motion)
weight condition occurs before the three seconds expire, the pushbutton tare
command is executed.
If there is still motion at the end of three seconds, the command is aborted and a
“Tare Failure – In Motion” error displays.
Pushbutton Tare Disabled—If pushbutton tare is configured as disabled, the
TARE scale function key will not initiate a semi-automatic tare.
Negative Gross Weight—Any pushbutton tare attempted when the gross
weight is at or below zero is ignored and a “Tare Failed–Too Small” error
displays. Ensure that the gross weight is above zero.
Keyboard Tare
A keyboard (preset) tare is a numeric tare that is entered manually through the
numeric keypad, received serially from a peripheral, or retrieved from the Tare
Table memory. The preset tare value cannot exceed the capacity of the scale. Data
entered is interpreted to have the same units as the current displayed value. Motion
does not impact the entry of preset tare values.
Keyboard tare can be configured in Setup as enabled or disabled. When disabled,
the numeric keypad and the TARE scale function key
cannot be used to obt
a tare.
ain
To manually enter a preset tare value, use the numeric keypad to enter the tare
value (the entry will display above the softkey icons) and press the TARE scale
2-21
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