Cooper Instruments & Systems DFI 250X Digital Weight Indicator - Manual (Page 15)

CF 147 11 version 1.1
Note: The <POWER> key can be locked to prevent the instrument being turned off from the front keypad. Refer to
KEY.LOC (Front Panel Key Locking) section 7.4.4 for more information.
5.4.1 Automatic Operation
The <POWER> key on the instrument is unusual in that it has a memory function associated with it. This means
that the state of the power setting is remembered even if external power is interrupted. It is therefore possible to
turn the instrument on in the safe knowledge that it will operate whenever external power is available and will not
need to be manually turned on again if the power is interrupted.
5.5 ZERO Key
When an empty scale has drifted away from a true zero reading, this key is used to perform a zero
adjustment on the scale display. The zero adjustment is stored when power is removed and is re-used
when next powered up.
The amount of weight that may be cancelled by the key is limited via an item in the Setup of the
instrument. Refer to Z.RANGE (Allowable Zero Operating Range)
section 7.4.2 for more information.
Long Press: When the indicator is set to Industrial mode a long press of the key will remove any stored
zero adjustment. Refer to Industrial vs. OIML and NTEP Modes, section 6.4, for more information on modes.
5.6 TARE Key
This key is used to temporarily set the scale to zero (such as cancelling the weight of a carton before
performing a filling operation). The display will show the Net weight and the NET annunciator will be lit.
The <TARE> key can operate in all modes (i.e. Industrial, OIML and NTEP). Refer to Industrial vs. OIML
and NTEP Modes section 6.4 for more information.
The weight tared is deducted from the allowable range of the scale, reducing the maximum weight that can be
displayed. The tare adjustment is stored when power is removed and is re-used when next powered up.
5.7 GROSS/NET Key
This key toggles the weight display between the Gross weight and the Net weight (provided that a Tare has
previously been acquired using the <TARE > key).
5.7.1 GSE-LINK Activation
This feature is used to temporarily connect a PC to the instrument for calibration and setup purposes. A long press
of the <GROSS/NET> key will toggle the GSE-LINK infrared communications On/Off. When the GSE-LINK has
been (enabled) the following will occur:
•
The instrument briefly displays the prompt rin-L.
•
The editing annunciators (i.e. GRP, ITM, etc.) will flash for up to five minutes while the instrument searches for
activity. During this period, the instrument also disables the RS-232 communications.
•
Activity Located: If the instrument is successful in locating activity, the editing annunciators will continue to
flash during the entire period of communications.
•
No Activity Located: If the instrument fails to locate activity, the GSE-LINK will be disabled and the editing
annunciators will stop flashing. The instrument will also revert back to the normal RS-232 communications (i.e.
the SERIAL:TYPE setting will be re-activated).
5.8 PRINT Key
If a printer or computer has been attached to the instrument and the manual print function has been
selected, the <PRINT> key will trigger an output of the current weight reading. The PRINT prompt is
displayed while waiting for the printer to accept data. If the printer is offline the PRINT prompt will remain
for a maximum of 10 seconds before the operation is cancelled. Each weight printed is automatically added to an
internal Total Weight.
Long Press: A long press of the key will print the total. The total weight is then cleared automatically.
5.9 FUNCTION Key