All other brand or product names within this publication are trademarks or
registered trademarks of their respective companies.
All information contained within this publication is, to the best of our knowledge, complete and
accurate at the time of publication. Rice Lake Weighing Systems reserves the right to make
changes to the technology, features, specifications and design of the equipment without notice.
The most current version of this publication, software, firmware and all other product
updates can be found on our website:
www.ricelake.com
Contents
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.
This manual is intended for use by service technicians responsible for installing and servicing 680 digital weight indicators.
®
Configuration and calibration of the indicator can be accomplished using the Revolution
front panel keys. See Section 4.0 on page 22 and Section 5.0 on page 40 for information about configuration and calibration.
configuration utility or the indicator
Manuals and additional resources are available from the Rice Lake Weighing Systems website at
www.ricelake.com
Warranty information can be found on the website at www.ricelake.com/warranties
1.1Safety
Safety Signal Definitions:
Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. Includes
hazards that are exposed when guards are removed.
Indicates a potentially hazardous situation that, if not avoided, could result in serious injury or death. Includes
hazards that are exposed when guards are removed.
Indicates a potentially hazardous situation that, if not avoided, could result in minor or moderate injury.
Indicates information about procedures that, if not observed, could result in damage to equipment or corruption
to and loss of data.
General Safety
Do not operate or work on this equipment unless this manual has been read and all instructions are understood.
Failure to follow the instructions or heed the warnings could result in injury or death. Contact any Rice Lake
Weighing Systems dealer for replacement manuals.
Failure to heed could result in serious injury or death.
Some procedures described in this manual require work inside the indicator enclosure. These procedures are to be performed by
qualified service personnel only.
Ensure the power cord is disconnected from the outlet before opening the unit.
Do not allow minors (children) or inexperienced persons to operate this unit.
Do not operate without the enclosure completely assembled.
Do not use for purposes other than weight taking.
Do not place fingers into slots or possible pinch points.
Do not use this product if any of the components are cracked.
Do not exceed the rated specification of the unit.
Only connect unit to equipment certified to IEC 60950, IEC 62368, IEC 61010 or similar.
Do not make alterations or modifications to the unit.
Do not remove or obscure warning labels.
Do not use solvents or aggressive substances to clean the indicator.
Weigh mode is the default mode of the indicator. The indicator displays gross or net weights as required, using the annunciators
to indicate scale status and the type of weight value displayed.
User Mode
User mode is accessible by pressing on the front panel. The indicator displays the audit, accumulator, tare and version
menus when in user mode.
Setup Mode
Most of the procedures described in this manual, including calibration, require the indicator to be in setup mode.
See Section 4.0 on page 22 for the procedure to enter setup mode and the parameters available.
1.3Option Card
The 680 has a single option card slot which can support the Synergy Series Single Analog Output option card (PN 195084).
The option card kit includes instructions for installation and setup.
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2.0Installation
WARNING
AVERTISSEMENT
CAUTION
ATTENTION
A
C
F
E
B
D
Installation
This section describes procedures for connecting power, load cells, digital I/O and data communication cables to a 680 indicator.
An assembly drawing and parts list are included for the service technician.
Risk of electrical shock.
Risque de choc.
Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to state and
local regulations.
Risque d’explosion si la batterie est remplacée par un type incorrect. Mattre au rebus les batteries usagées
selon les règlements d'état et locaux.
Use anti-static protection for grounding and to protect components from electrostatic discharge (ESD) when working inside the
680 enclosure.
Procedures requiring work inside the 680 must be performed by qualified service personnel only.
The electric receptacle to the 680 must be easily accessible.
Disconnect power before servicing.
Débranchez l’alimentation avant l’entretien.
2.1Unpacking
Immediately after unpacking, visually inspect the 680 to ensure all components are included and undamaged. The shipping
carton contains the indicator, this manual and a parts kit (Section 2.9 on page 12). If parts were damaged in shipment, notify
Rice Lake Weighing Systems and the shipper immediately.
The 680 includes a universal mount stand. The stand can be mounted on a wall, tabletop or a flat surface.
1.50)
Figure 2-2. Mounting Dimensions
The universal mount stand comes attached to the 680. Rice Lake Weighing Systems recommends removing the 680
from the stand prior to mounting.
Figure 2-3. Mounting the Indicator
1.Using the mount as a template, mark the screw locations.
2.Drill holes for the screws.
3.Secure the universal mount using the appropriate length 1/4'' or M6 hardware (not included).
4.Reattach the 680 to the universal mount stand.
The parts kit includes rubber grommets to insert into the four screw holes of the universal mount stand for a
non-mounted application.
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2.3Backplate Removal
WARNING
Note
WARNING
IMPORTANT
Remove the backplate of the 680 to connect cables and to gain access to the 680 board and power supply.
Before opening the unit, ensure the power cord is disconnected from the power outlet.
1.Place the 680 face-down on an anti-static work mat.
2.Remove the screws holding the backplate to the enclosure.
3.Lift the backplate away from the enclosure and disconnect the ground wire from the backplate.
Installation
Figure 2-4. Removing the Backplate
The 680 ships with only four screws securing the backplate. The remaining backplate screws are included in the
parts kit. For reassembly, torque backplate screws to 15 in-lb (1.7 N-m).
2.4Cable Connections
The 680 provides five cord grips at the bottom of the enclosure for cabling into the indicator. One of the cord grips is used for
the power supply and the other four are used to accommodate the load cell cable and the serial, digital inputs and outputs,
Ethernet, micro USB or the optional analog output communications cables. Three of the four free cord grips come with a plug
installed to prevent moisture from entering the enclosure. Depending on the application, remove the plugs from cord grips to be
used and install cables as required. The recommended cable strip length is 0.25'' (7 mm) for all 680 connectors.
See Figure 2-5 for the recommended assignments for the 680 cord grips.
Only connect unit to equipment certified to IEC 60950, IEC 62368, IEC 61010 or similar.
Setup switch
access screw
Load cell cable
cord grip (open)
Communications access
cord grip (plugged)
Power cord
Figure 2-5. Recommended Cord Grip Assignments
Do not have open/bare wires outside of the enclosure. Make sure no stripped portion of cable is on the outside
of the cord grips.
To attach the cable from a load cell or junction box, route cable to the J1 connector (
cable is included in the parts kit. See
A ferrite from the parts kit must be applied to the load cell cable within 1'' (25 mm) of the load cell. The cable must be
sent through the ferrite twice.
Table 2-3
for wiring the load cell cable from the load cell or junction box to connector.
ConnectorPinFunction
J11+SIG
2–SIG
3+SENSE
4–SENSE
5+EXC
6–EXC
Table 2-3. J1 Pin Assignments (Load Cell)
Section 2.5 on page 10
). Connector for the
Installation
For a 4-wire installation leave pins 3 and 4 empty on the connector.
For a 6-wire installation set the SENSE parameter to 6-WIRE in the CONFIG menu (Section 4.4.1 on page 24).
2.4.4RS-232 Serial Communications
The J3 connector (Section 2.5 on page 10) is intended to provide a connection point for the RS-232 serial communications.
Two RS-232 ports are available. See Table 2-4 for the pin assignments for the J3 connector.
ConnectorPinRS232-1RS232-2
J31GND–
2RX1–
3TX1–
4–GND
5–RX2
6–TX2
Table 2-4. J3 Pin Assignments (RS-232)
2.4.5RS-485/422 Serial Communications
The J4 connector (Section 2.5 on page 10) is intended to provide a connection point for the RS-485/422 serial communications.
See Table 2-5 for the pin assignments for the J4 connector.
The Digital I/O port, J5 connector (Section 2.5 on page 10) is intended to be connected to both digital inputs and outputs.
Digital inputs can be set to provide many functions, including most keypad functions except MENU. Digital inputs are active low
(0 VDC) and inactive high (5 VDC). Use the Digital I/O menu to configure the digital inputs.
Digital outputs are used to control relays which drive other equipment. Outputs are designed to sink, rather than source current.
Each output is an open collector circuit, capable of sinking 20 mA when active. Digital outputs are active when low or at 0 VDC,
with reference to the 5 VDC supply.
Use the Digital I/O menu to set the function of the Digital I/O pins to OUTPUT and then use the Setpoints menu to configure the
digital outputs. See Table 2-6 for the pin assignments for the J5 connector.
ConnectorPinSignal
J515 VDC, 250 mA max
2GND
3DIO1
4DIO2
5DIO3
6DIO4
Table 2-6. J5 Pin Assignments (Digital I/O)
2.4.7Micro USB Device Communications
The Micro USB port, J7 connector (Section 2.5 on page 10), is intended to be connected to a PC only. It appears as a Virtual
COM Port and is assigned a “COMx” designation. Applications communicate through the port like a standard RS-232
communications port.
The driver must be installed on the PC before the Micro USB device port can be used. With the PC and 680 powered on, connect
a USB cable from the PC to the micro USB connector (J7) on the 680. The PC recognizes if a device has been connected, and
attempts to install the driver needed to make it work. The driver can also be downloaded from the Rice Lake website.
If using Windows 7 or later and the PC is connected to the Internet, the operating system may be able to install the
drivers automatically.
When the individual drivers are installed, a new COM Port designation is assigned for each physical USB port the 680 is
connected to on the PC.
For example, if the PC has two physical RS-232 COM Ports, they most likely are designated COM1 and COM2. When
connecting the 680 to a USB port on the PC, it is assigned the next available port designation, or in this case, COM3. When
plugging into the same physical USB port on the PC, the port designation is again COM3. If plugging into another physical USB
port on the PC, it is assigned the next available designation, in this case COM4.
®
After the drivers are installed, use Windows
Device Manager to determine the COM Port designation which was assigned to
the USB port, or open the application to be used with the 680, such as Revolution, to see which ports are available.
Configuration of the Micro USB port is done in the USBCOM sub-menu under PORTS in setup mode.
The port can be configured as either a demand port for EDP commands and printing, or as a data streaming port. Other settings
include the termination character(s), echoes, responses, the end-of-line delay and whether or not the 680 displays a 'print'
message when a print format sends data out the port.
If a computer application has an open communications connection through the Micro USB device port and the
physical cable connection is interrupted, a soft reset must be performed on the 680 or the power must be cycled to
the 680; the connection in the computer application must be disconnected and then reconnected before it continues
to communicate with the 680.
For the Micro USB device port, it does not matter what the settings are for Baud, Data Bits, Parity and Stop Bits in the
computer software. The port communicates in the same way regardless of these settings.
This port is not a host port and is not intended to be connected to other devices such as keyboards, memory sticks
or printers.
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Installation
Note
2.4.8Ethernet
The 680 features Ethernet TCP/IP 10Base-T/100Base-TX communication using the J8 connector (Section 2.5 on page 10),
and can support two simultaneous connections, one as a server, the other as a client.
Through an Ethernet network, software applications can communicate with the 680 using the EDP command set (Section 7.0
on page 44), or data can be streamed continuously from the 680, or printed on demand.
The Ethernet port supports both DHCP and manual configuration of settings such as the IP and netmask. In addition, the TCP
Port number, and the Default Gateway can be configured using the Ethernet sub-menu of the Ports setup menu. For more
information on configuring the Ethernet port see Section 4.4.4.3 on page 30.
Physical connection to the 680 Ethernet port can be made directly from a PC to the 680 (AdHoc Network), or through a network
router or switch. The port supports auto-sensing MDI/MDIX cable configuration, allowing either straight-through or crossover
cables to be used. See Table 2-7 for the pin assignments for the J8 connector.
ConnectorPinSignal
J81TX+
2TX
3RX+
4RX
Table 2-7. J8 Pin Assignments (Ethernet)
When looking into the enclosure from the backside of the indicator, pin 1 of the J8 connector is at the bottom.
-
-
See Table 2-8 and Table 2-9 for the pin assignments when connecting a RJ45 Ethernet cable to the J8 connector. There are
two Ethernet wire standards (T568A and T568B). If the type of cable is unknown, use the wiring option in Table 2-8. The autosensing feature of the Ethernet port allows either of the wiring options to work. Trim the unused wires to get them out of the way.
RJ45 Cable
Pin
1
2
3
4
5
6
7
8
RJ45 Pin #
1
2
3
4
5
6
7
8
Wire Color
(T568A)
White/Green
Green
White/Orange
Blue
White/Blue
Orange
White/Brown
Brown
Wire Diagram
(T568A)
10Base-T Signal
100Base-TX Signal
Transmit+1
Transmit
Receive+3
UnusedNA
UnusedNA
Receive
UnusedNA
UnusedNA
Table 2-8. Ethernet Cable Pin Assignments for T568A
Wire Color
(T568B)
White/Orange
Orange
White/Green
Blue
White/Blue
Green
White/Brown
Brown
Wire Diagram
(T568B)
10Base-T Signal
100Base-TX Signal
Transmit+1
Transmit
Receive+3
UnusedNA
UnusedNA
Receive
UnusedNA
UnusedNA
Table 2-9. Ethernet Cable Pin Assignments for T568B
The 680 has a single option card slot which uses the J22 and J23 connectors (Section 2.5). Instructions to install or replace an
option card is provided with the option card.
2.5CPU Board
J22 J23
Setup Switch
Header (J25)
J10
Audit Jumper
(J24)
Firmware Update
Switch (SW4)
J7
Figure 2-8. 680 CPU Board
Connectors
• Load Cell (J1)• RS-485/422 (J4)• Micro USB (J7)• Power (J10)
Once work inside of the enclosure is complete, reattach the backplate ground wire to the backplate. Position the backplate over
the enclosure and install the ten backplate screws. Use the torque pattern in Figure 2-9 to prevent distorting the backplate
gasket. Torque screws to 15 in-lb (1.7 N-m).
Torqued screws may become less tight as the gasket is compressed during the torque pattern; a second torque is
required using the same pattern and torque value.
Figure 2-9. Backplate Torque Pattern
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Installation
Note
Note
2.7Sealing the Indicator (Optional)
Insert a lead wire seal through three fillister screws. This restricts access of the setup switch, electronics, electrical contacts and
Legal for Trade configuration parameters.
The audit jumper (J24) must be set to off to require pressing the setup switch for access to configuration parameters.
Figure 2-10. Sealing the Indicator – No Access
1.Reposition the two fillister head backplate screws to the lower right and lower right-center screws locations.
1.Torque the two backplate screws and setup screw as specified in Section 2.4.2 on page 7.
2.Navigate the sealing wire through the fillister head screws on the backplate and the fillister head screw at the bottom of
the enclosure, as shown in Figure 2-10.
3.Seal the wire to secure.
2.8Parts Kit Components
Part No.Description Qty
15631Cable Tie, 3'' Nylon4
15650Mount, Cable Tie 3/4''2
193230Screw, Mach M4 x 0.7 x 10 Phillips Pan Head SST4
194219Screw, Mach M4 x 0.7 x 10 Phillips Drilled Cheese Head SST2
194446Ferrite Core, Snap on Fair-rite1
194488
19538Post Plug, Slotted Black Plastic Stem, 1/4 x 1, Seals Inside Cord Grip3
195993Connector, 6 Position Screw Terminal Pluggable 3.50 mm Black3
195995Connector, 4 Position Screw Terminal Pluggable 3.50 mm Black1
195998Connector, 5 Position Screw Terminal Pluggable 3.50 mm Black1
30632Bag, Plastic 5 x 81
42149Bumper, Rubber Grommet 0.50 (OD) x 0.281 (ID)4
53075Clamp, Ground Cable Shield, Radius 0.078''4
75062Washer, Bonded Sealing #8 7/16 (0.4375) OD SST6
94422Label, Capacity 0.40 x 5.001
The recommended cable strip length is 0.25'' (7 mm) for all 680 connectors.
Screw, Mach M4 x 0.7 x 6 Phillips Pan Head with External Tooth Washer SEMS
1190142Enclosure, 680 Plus Indicator Multi-Segment LED Display1
2190230Overlay, 680 Plus Indicator Membrane Switch with Numeric Keys1
315650Mount, Cable Tie 3/4''4
15631Cable Tie, 3'' Nylon4
4195684680 Replacement CPU Board with Battery1
194487Screw, Metric M3 x 6 SEMS Phillips Pan Head with External Tooth Washer4
571408Battery, CR2032 3 V Lithium Manganese Dioxide1
6193108Setup Switch Assembly, Remote1
7187876Nut, Lock M5 Nylon Insert A2 SST1
846381#10 Bonded Sealing Washer, 18-8 SST2
9150800Screw, Mach M5-0.8 x 10 Pan Phillips SST1
10180861Screw, Mach M5 x 0.8 x 10 mm Slotted Drilled Cheese Head SST1
1115626Cord Grip, PG92
30375Seal Ring, PG9 Nylon2
15627Lock Nut, PG92
1268600Cord Grip, PG113
68599Seal Ring, PG11 Nylon3
68601Lock Nut, PG113
1319538Post, Slotted Black Seal 1/4 x 1, Cord Grip - Post Only3
14103988Washer, Nylon 0.515-0.52 ID x 1.00 x 0.093-0.094 Thick White Nylon 6/62
15180825Knob, M6 x 1 Threaded 32 mm Diameter 7-Lobe Nylon ZN-Plated Steel2
1629635Tilt Stand, SST1
17180842Power Cord Assembly, NEMA 5-15
180850Power Cord Assembly, Europe CEE7/7
1888733Vent, Breather Sealed Gortex Membrane Black1
1988734Nut, Breather Vent M12 x 1 Thread1
20193230Screw, Mach M4 x 0.7 x 10 Phillips Pan Head SST4
2175062#8 Bonded Sealing Washer, 7/16 OD SST4
22192562Backplate, 680 Universal with Gore Vent Hole, No Options1
2384388Gasket, Backplate1
24180826Nut, KEP M4 x 0.7 External Tooth Lock Washer 18-8 SST1
25194488Screw, Mach SEMS M4 x 0.7 x 6 Phillips Pan Head External Tooth Lock Washer2
2615601Wire, Ground 6'' with No. 8 Eye Connector1
27180856Washer, M4 Internal Tooth SST4
28193281Power supply, 12 V 15 W MeanWell RS-15-12
29193337Cable Assembly, 680 Power Harness, 2 Position, Flying Lead1
30192439Bracket, power supply MeanWell 15 and 25 Watt1
31194487Screw, Metric M3 x 6 SEMS Phillips Pan Head with External Tooth Washer5
The front panel consists of a seven-segment display with seven 0.8'' (20 mm) tall digits. A negative number displays as six
digits plus the negative symbol. Front panel also includes 19 flat membrane panel, tactile feel buttons, which include six primary
scale function buttons, a numeric keypad and a power button. There are eight LED annunciators for units and scale functions.
3.1Front Panel
Figure 3-1. 680 Front Panel
KeyFunction
Turns the unit ON/OFF:
If ON, press and hold for eight seconds to turn unit OFF
If OFF, press and hold for two seconds to turn unit ON
The Menu key is used to access user mode; See Section 4.1.1 on page 22 for more information on setting up the Menu key to access setup
mode parameters
Sets the current gross weight to zero, provided the amount of weight to be removed or added is within the specified zero range and the scale
is not in motion; The zero band is defaulted to 1.9% of full scale, but can be configured for up to 100 percent of full scale; Also used as the up
key to navigate menus
Switches the weight display to an alternate unit; The alternate unit is defined in the Configuration menu, and could be kg, g, lb, oz, tn or t;
Also used as the left key to navigate menus or to toggle to another digit when editing a value
Sends on-demand print format out the configured port, provided the conditions for standstill are met; RS232-1 is the default print port;
Also used as the right key to navigate menus or to toggle to another digit when editing a value
Performs one of several predetermined Tare functions dependent on the mode of operation selected in the TARE FN parameter; Also acts as
an enter key for numeric or parameter entry
Switches the display mode from gross to net, or from net to gross; If a tare value has been entered or acquired, the net value is the gross
weight minus the tare; Gross mode is represented by the Gross/Brutto annunciator; net mode is represented by the Net annunciator; Also
used as the down key to navigate menus
Clears current value in a numeric entry or clears the currently selected digit in an alphanumeric entry
Table 3-1. Buttons and Descriptions
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Operation
Note
3.2LED Annunciators
The 680 display uses a set of eight LED annunciators to provide additional information about the value being displayed.
LEDDescription
Gross
Brutto
Net
lb
kg
PT
Gross/Brutto LED – Gross weight display mode (or Brutto in OIML mode)
Net LED – Net weight display mode
The Center of Zero LED – Indicates the current gross weight reading is within +/- 0.25 display divisions of the acquired zero, or is within
the center of zero band; A display division is the resolution of the displayed weight value, or the smallest incremental increase or
decrease which can be displayed or printed
Standstill LED – Scale is at standstill or within the specified motion band; Some operations, including zero, tare and print, can only be
done when the standstill LED is on
lb and kg LEDs:
Displays which unit of measure is being used; lb and kg annunciators indicate the units associated with the displayed value;
The displayed units can also be set to short tons (tn), metric tons (t), ounces (oz), grams (g) or none (no units information displayed);
The lb and kg LEDs function as primary and secondary units annunciators; If neither primary nor secondary units are lb or kg, the lb
annunciator is lit for primary units and kg is lit for secondary units
Tare LED – Indicates a push-button tare weight has been acquired and stored in memory
T
Preset Tare LED – Indicates a preset tare weight has been keyed in or entered and stored in memory
Table 3-2. LED Annunciators
3.3General Navigation
The front panel scale function buttons are also used to navigate through the menu structure.
•
•
• enters a menu or parameter and selects/saves parameter settings or values
• to access user mode, to leave a parameter without making changes, or to return to weigh mode
• Use the numeric keypad to enter a value and press to accept the value (Section 3.3.1)
3.3.1Numeric Value Entry
Several parameters in the menu structure require the entry of a numeric value rather than the making of a selection.
Follow this procedure to enter a numeric value:
1.Press or to enter into a parameter. The current parameter value displays.
2.Press to clear the current value.
3.Use the numeric keypad to enter a new value.
4.If necessary, press to make the value negative.
5.Press to save the new value. The next parameter in the menu displays.
and move left and right (horizontally) in a menu level
and move up and down to different menu levels
Pressing also saves the new value, but the indicator returns up to the current parameter, rather than to the
next parameter in the menu.
Several parameters in the menu structure require the entry of an alphanumeric value rather than the making of a selection.
The end of the alphanumeric character string is indicated by the “_.” character symbol.
Follow this procedure to enter an alphanumeric value:
1.Press or to enter into the parameter. The current parameter entry displays.
2.Press or to move to the character to be edited.
3.Press to enter into the character options for the location at the far right of the display.
4.Press or to scroll through available character or use the numeric keypad to enter in the ASCII value of
the intended character (Section 11.9 on page 69).
5.Press to select the currently displayed character. The selected character displays in the second display field.
6.Press to enter into the character options again for the next character.
7.Press again or press to clear the current character.
8.Repeat the previous steps until alphanumeric entry is complete.
9.Press to save the new entry.
Press to leave the parameter without saving the changes.
3.4General Indicator Operation
Basic 680 operations are summarized below.
3.4.1Zero Scale
1.In gross mode, remove all weight from the scale and wait for the LED to light.
2.Press . The LED lights to indicate the scale is zeroed.
The scale must be stable and within the configured zero range for the scale to be zeroed. If the scale cannot be
zeroed, see Section 11.1.1 on page 62.
3.4.2Toggle Units
Press to toggle between primary and secondary units. The current unit LED is lit.
3.4.3Toggle Gross/Net Mode
Net mode is available when a tare value has been entered or acquired (Net = Gross minus Tare). If tare has not been entered
or acquired, the display remains in gross mode. The LED above Gross or Net indicate the current mode.
Press to toggle the display mode between gross and net.
3.4.4Acquire Tare
1.Place a container on the scale and wait for the LED to light.
2.Press to acquire the tare weight of the container. The net weight displays and the Net LED and T LED light,
confirming the tare value was entered.
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3.4.5Remove Stored Tare Value
Note
1.Remove all weight from the scale and wait for the LED to light. The display reads the negative tare value and
the LED is lit.
2.Press to zero the scale, if needed.
3.Press (or in OIML mode). Display changes to gross weight and the Gross LED lights.
3.4.6Preset Tare (Keyed Tare)
Tare mode must be set to keyed or both for the preset tare feature to function.
1.Remove all weight from the scale and wait for the LED and LED to light.
2.With the scale displaying zero weight, use the numeric keypad to enter the tare weight value and press .
3.The display changes to net weight and the Net LED and PT LED light, confirming the preset tare was entered.
Press again while the LED is lit, or enter a keyed tare of zero to remove the preset tare value.
3.4.7Display a Stored Tare
1.Press . audit displays.
Operation
2.Press or until
3.Press .
4.Press . The stored tare value displays.
5.Press twice to return to weigh mode.
If there is not a tare in the system, the value displayed is zero.