Fairbanks 2800 Series Intrinsically Safe Instrument - Manual (Page 19)

Section 2: Operation
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2.3. FRONT PANEL KEY FUNCTIONS
The function of the front panel keys varies depending on the mode in which the
instrument is operated. This Subsection defines the operation of each front panel key
when in the weighing mode.
ZERO KEY
When in the Gross mode, this key sets the Gross Weight to Zero.
─ If motion exists, the ZERO command will not be executed.
─ If the weight on the platform exceeds the zero limit, and the ZERO key is
pressed, the Zero command will not be executed.
PRINT KEY
Used to transmit weight data to an external device.
GROSS/NET KEY
Toggles between the Gross and Net Weight modes.
─ It is also used to exit programming.