Specifications

22 DC-788 Operation Manual
5.2 Weight Unit Switching
The weight units displayed can be changed between Kg and Lb during weighing operations by pressing the kg/lb
key. The appropriate annunicator will light. SPC27 - Base Weight Units sets the default weight unit to Kgs or
Lbs. If you are using more than one scale, SPC35 sets the weighing units for the 1st and 2nd scales. (For further
instructions on how to set the specifications, see
Section 3.1.2)
5.3 Toggling Between Scales
To toggle between Scales 1 and 2, press the SCALE key. The indicator lamp for the appropriate scale lights on
the display.
NOTE: This function is available only when SPC26 - 2nd Scale is enabled. (For further instructions on how to set the
specifications, see
Section 3.1.2)
5.4 Setting Tare Weights in Weighing Mode
This section will describe the different tare-related operations you can perform from the weighing mode. Tare
weight can be set by one touch tare using the TARE key or, if the value is known ahead of time, can be entered
digitally using the digital tare function. Tare addition and subtraction can also be done digitally or by using the
TARE key. Finally, an existing tare stored with an Item Code can be overridden temporarily in the Weighing
Mode if needed.
Note: The following SPC codes must be set properly to allow these operations before continuing: SPC 28, Bit 1 - MANUAL
TARE CANCELLATION sets whether or not the tare weight can be cancelled from the keyboard. SPC 28 also controls whether
TARE SUBTRACTION (Bit 2) and TARE ACCUMULATION (Bit 1) are allowed or inhibited and whether AUTO TARE CLEAR WHEN
REZERO (Bit 0) takes place or not. SPC 29 controls whether the scale allows DIGITAL TARE entry (Bit 3), whether the scale can
do ACCUMULATION WHEN TARE (Bit 2), if there will be ZERO TRACKING WHEN TARE (Bit 1) and WEIGHT RESET WHEN
TARE (Bit 0). SPC 30 sets whether or not TARE AUTO CLEAR is activated (Bit 3). (For further instructions on how to set the
specifications, see
Section 3.1.2)
5.4.1 One Touch Tare (When the Tare Weight is Unknown)
1. While in the weighing mode, place a bin, box or other weight to be tared out on the platform.
2. Press the TARE key to subtract the tare weight. The Net annuciator will light up, the Weight display
should now show 0 and the tare weight will show in the Tare display.
3. If you remove the tare weight from the platform, the tare weight will show as a negative weight in the
weight window and the Net annunciator will remain lit.
Note: This tare weight will be overridden by the weight stored with an Item Code when you call up an Item Code.
4. To clear this tare weight and return to the Weighing Mode, press the TARE key again. The net
annunciator will not longer be lit.
5.4.2 Digital Tare (When Tare Weight is Known in Advance)
1. While at the stand-by screen, enter the known tare weight by using the numeric keypad.
2. Press the TARE key to subtract the tare weight. The Net annunciator will light up and the tare weight
will be displayed in the weight display.
Note: This tare weight will be overridden by the weight stored with an Item Code when you call up an Item Code.
3. To clear this tare weight and return to the Weighing Mode, press the TARE key again. The net
annunciator will no longer be lit.
Note: For digital tare entry, the decimal must be in the appropriate place as it would be displayed in the weight display. For
example,.250 would be entered as 0.250, not.250. The weight display shows weight entered with a negative sign indicating that
it is a tare weight.
5.4.3 Tare Addition or Subtraction
Two tares can be accumulated or subtracted using the TAR E key as well. Tare weights cannot be accumulated or
subtracted by digital entry.
Note: SPC 28, Bits 2 and 1 must be set to 00 to enable Tare Accumulation and Tare Subtraction. (For further
instructions on how to set the specifications, see
Section 3.1.2)
1. Place the container, box or item to be tared on the platform and press the TARE key. The weight display
should show 0, the Net annunicator will illuminate and the tare weight will appear in the Tare display.