Spare Parts Listing ............................................ 26
Model 6700 Family User’s Manual
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Specifications
Description
Capacity/Resolution
Agency Certificates
of Conformance
The Avery Berkel 6700 models are digital
electronic bench scales specifically designed for
point-of-sale applications and are “Legal-forTrade.” The scales are easily interfaced with a
cash register, computer or other POS terminal.
Important! Weights and Measures normally
requires inspection of scale before scale is
placed into operation.
ModelCapacity (lb)Capacity (kg)
6702-715 x .0057 x .002
6702-1530 x .0115 x .005
6710-715 x .0057 x .002
6710-1530 x .0115 x .005
6720-715 x .0057 x .002
6720-1530 x .0115 x .005
6720-3060 x .0230 x .01
6720-60120 x .0560 x .02
Model 6702/6710/6720
US and Canada Approved Legal for Trade
USA: NTEP COC# 95-070
Canada: MOI# AM-5076
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Dimensions
Model 6702: 10.4 x 6.4 x 2.5
Model 6710: 10.4 x 10.4 x 2.5
Model 6720: 14.1 x 12.6 x 4.1
Power Supply
Frequency
Power Requirements
Operating Temperature
Construction
UL/CSA approved power supply with 6’ line cord
6702/6710: Wallmount
10% to 95% RH (non-condensing)
Models 6702/6710: Aluminum Base and Load
Bridge with stainless steel weigh platter.
Overload protection: Adjustable center and side
stops.
Model 6720: Die cast aluminum base with a
stainless steel weigh platter.
Overload protection: Adjustable center stop,
fixed corner stops.
Display
Scale Leveling
Zero Window
½" high, six-digit LCD.
Key panel with ZERO and TEST keys.
Remote display with 7 ft. cable. Standard on
Models 6702 and 6710, optional on 6720.
Using the leveling bubble as a guide, adjust the
four adjustable feet to level the scale.
Initial automatic zero setting is ±10% of maximum capacity—active at power up. Manual zero
setting range is ±2% of maximum capacity—
active using the ZERO key.
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Under Capacity Limits
Under capacity indication will be given with
dashes appearing on the bottom line of the
display whenever the display is below the initial
zero value.
Over Capacity Limits
Sealing
Internal Counts
Dynamic Response
Communications
Over capacity indication will be given with
dashes appearing in the upper line of the
display whenever the weighed item exceeds 9
divisions over the rated capacity of the unit. The
scale will use the initial zero value for reference
for over capacity determination.
Access to the calibration switch can be secured
with a lead wire or pressure sensitive security
seal. The remote or primary indicators have no
metrological features that require the use of a
security seal.
The scale has 100,000 internal counts.
The time interval when weight is applied to the
scale until a stable weight is displayed:
0–1000d,1.5 seconds
1000d+, 2.0 seconds
maximum mean average
Factory default settings: 9600 baud, 7 data bits,
even parity, 1 stop bit.
Specific cable requirements are determined by
particular POS terminal. A standard 9-pin pass
through RS-232 interface cable is necessary for
most PC interfaces. Not a null modem.
RS-232 bidirectional, configurable 1200 to
19.2K baud. Transmits weight and scale status
whenever ASCII “W” <CR> is sent by the POS
terminal. Standard ECR protocol is OPOS
compatible. For Protocol details contact factory.
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Initial Setup
Unpacking the Scale
Installing the Scale
Model 6702
Model 6710
1. Remove contents of the shipping container.
2. Inspect the scale for evidence of shipping
damage. Immediately report any damage to
the shipper.
1. Mount the scale on a stable, level surface
that is free from air currents and vibration.
Be sure the scale platter does not touch any
adjacent surfaces.
2. To install the scale surface flush with a
countertop, use the dimensions on the
following page to guide construction.
Scale DimensionsMin. Cut-Out Dimensions
D 10.4 in. (26.4 cm)11.1 in. (28.2 cm)
W 6.4 in. (16.3 cm)7.1 in. (18.0 cm)
H 2.5 in. (6.35 cm)*
*Adjustable to 3.0 in. (7.6 cm)
Scale DimensionsMin. Cut-Out Dimensions
D 10.4 in. (26.4 cm)11.1 in. (28.2 cm)
W 10.4 in. (26.4 cm)11.1 in. (28.2 cm)
H 2.5 in. (6.35 cm)*
*Adjustable to 3.0 in. (7.6 cm)
Model 6720
Scale DimensionsMin. Cut-Out Dimensions
D 12.6 in. (32.0 cm)13.25 in. (33.7 cm)
W 14.1 in. (35.8 cm)14.75 in. (37.5 cm)
H 4.1 in. (10.4 cm)*
*Adjustable to 4.6 in. (11.7 cm)
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3. Loosen the collets or jam nuts on the
leveling feet. Level the scale by using the
level bubble under the scale platter as a
guide. Be sure all four feet are in firm
contact with the counter, then tighten all
collets and jam nuts.
4. Make sure all power cords, remote display
cables, etc., are not touching the live weighing surface.
5. Plug the unit into an appropriate voltage
outlet that is properly grounded.
6. The 6720 scale can support more than one
display; however, only one keypad is
operable. Switch 3 selects internal or
external display keypad operation.
The normal setting for the 6720 with the
internal display is Switch 3=Closed. On
6720 w/remote only or 6710 and 6702
scales, Switch 3=Open.
Operation
Power Up Test
Sequence
If RAM or ROM error
is reported, you must
press the TEST key to
acknowledge the
condition. See “Error
Codes” section.
8
When the scale is first powered up, it will
perform a test sequence. During this sequence,
the display will show the following:
• The model number and the software
version/revision level.
• A numeric counting test for all segments
of the display. During this test, a test of
Random Access Memory (RAM) and a test
of Read Only Memory (ROM) is performed.
If everything is OK, the display will show zero
weight and the scale is ready for use.
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Performing a Normal
Weighment
If the scale is outside
the ± 2% zero window,
center dashes are
displayed “- - - -.” If
necessary, reapply
power to reset the
initial zero setting.
1. With the scale powered on, make sure the
scale platter is empty and the display is at
zero. If it is not, press the ZERO key…
0.00 is displayed.
2. Place an item to be weighed on the scale
platter…
The scale will display the gross weight.
3. Remove the item from the scale platter.
Operation Controls
Accessing the
Figure 1
6720 Switch
Location
Menu Mode
ZERO Key – The ZERO key will zero the scale if
weight is stable, and acts as the NO or SCROLL
key in the Menu mode.
TEST Key – The TEST key can be used to
perform the initial power-up test sequence,
recall diagnostic routines, or to view the scale
configuration information. This key also acts as
YES or ACCEPT in the Menu mode.
The 6700 models power up ready for weighing
operations. Access the Menu mode by setting
Switch 1 shown in Figure 1 or 2 to the OPEN or
Menu mode position.
Top View of 6720 Scale with Platter Removed.
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Figure 2
Bottom view
Bottom View of 6702 or 6710 Scale
Menu Mode
There are three modes available to you with
Switch 1 in the Menu mode or OPEN position.
They are as follows:
DIAG (Diagnostic Mode) – To test areas of
the scale’s function
CAL (Calibration Mode) – To calibrate the
scale
CONF (Configuration Mode) – To configure the scale for your application
The structure for these menus is shown in
Figure 3. Specific information about each mode
followed by step-by-step instructions for accessing them are described in the following pages.
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Figure 3
Menu Structure
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Calibration Points
Table 1
Alternative
Calibration Points
Baud Rate and
Parity Options
Table 2
Baud Rate and
Parity Options
Alternate
The Avery Berkel 6700 bench scales allow
calibration using less than full capacity weights.
See Table 1 for alternative weights that can be
used to calibrate your scale for its designated
capacity.
Alternative
CapacityCalibration Weights
9.995 lb10 lb
15 x .005 lb10, 15 lb
7 x .002 kg7 kg
9.995 kg10 kg
30 x .01 lb10, 20, 30 lb
15 x .005 kg10, 15 kg
60 x .02 lb10, 30, 60 lb
30 x .01 kg10, 20, 30 kg
99 x .05 lb10, 50, 100 lb
120 x .05 lb10, 50, 100 lb
60 x .02 kg10, 30, 60 kg
Tip: Easy access to
the diagnostic mode is
available directly from
the front panel without
opening the scale to
access the Menu
mode switches. See
Setup Review/Test
section.
The Diagnostic (DIAG) mode menu allows
testing of specific areas of the scale’s function
and viewing current configuration settings. This
includes the following:
DISPLAY (DISP) – Shows the version and
revision of the software, followed by a display
segment test.
RAM (RA) – Performs a nondestructive test of
RAM in the processor.
ROM (RO) – Performs a checksum of all locations of ROM in the processor.
INPUT/OUTPUT (I/O) – Data is output by the
scale and through the use of a loopback connector. The data is immediately read back into
the receive channel and verified against what
was sent. Requires a jumper (short) between
transmit and receive data lines.
DIVISION TEST, w/AZT (DIV-A) – Weight data
is normalized to 100,000 counts of displayed
resolution. AZT (Auto Zero Tracking) is enabled.
DIVISION TEST, w/o AZT (DIV-N) – Weight
data is normalized to 100,000 counts of displayed resolution. AZT is disabled.
Viewable configuration settings include:
LN FRLine frequency
FILTFilter setting
PROTSerial protocol
BAUDBaud rate
CAPScale capacity
UNITSUnit of measure
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Follow these steps to access the tests in the
DIAG menu.
1. From normal weighing mode, move Switch 1
to the Menu mode or OPEN position. (See
Figure 1 or 2).
If you encounter any
failure in these tests,
contact your local
Avery Berkel dealer.
Press the ZERO key to
scroll through lists of
selections.
Press the TEST key to
make a selection.
To skip a test, press
the ZERO key to scroll
to the next test.
DIAG is displayed.
2. Press the TEST key. . .
DISP is displayed. This stands for
display.
3. Press the TEST key to perform the display
test described earlier…
Display test is performed and the display
shows DISP after the test is completed.
4. Press the ZERO key…
RA is displayed. This stands for the
RAM test.
5. Press the TEST key to perform the RAM
test…
PASS or FAIL is displayed briefly; then
RA.
6. Press the ZERO key…
RO is displayed. This stands for the
ROM test.
7. Press the TEST key to perform the ROM
test . . .
14
PASS or FAIL is displayed briefly; then
RO.
8. Press the ZERO key…
I/O is displayed. This stands for the
INPUT/OUTPUT test.
Model 6700 Family User’s Manual
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9-Pin RS-232 models:
On 15-Pin “RS” units,
jumper from Pin 1 to 2.
9. With a loopback connector in place, press
the TEST key to perform the I/O test…
PASS or FAIL is displayed briefly, then
I/O. This test is only valid on 9-pin or
15-pin models configured as “RS” units.
10. Press the ZERO key . . .
DIAG will flash every
15 seconds during the
high resolution test as
a reminder that you
are doing a test and
not seeing normal
weight readings.
The remaining
selections are for
viewing current
settings only. You can
scroll through the
menu to verify the
settings, but to make
changes, you must
enter configuration or
calibration.
DIV-A is displayed. This stands for the
high resolution DIVISION TEST W/AZT
enabled. See note at left.
11. Press the TEST key to perform this test…
The display shows the weight on the
scale at a resolution of 100,000 counts.
12. Press the TEST key to stop the test…
DIV-A is displayed.
13. Press the ZERO key…
DIV-N is displayed. This stands for the
high resolution DIVISION TEST w/o AZT
enabled.
14. Press the TEST key to perform this test…
The display shows the weight on the
scale at a resolution of 100,000 counts.
15. Press the TEST key to stop the test…
DIV-N is displayed.
16. Press the ZERO key…
LN FR is displayed. This stands for line
frequency.
17. Press the TEST key...
The current line frequency (50 or 60) is
displayed.
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18. Press the ZERO key…FILT is displayed. This stands for
filtering.
19. Press the TEST key…
The current filter setting, FAST or SLO,
is displayed.
18. Press the ZERO key…PROT is displayed. This stands for
protocol.
19. Press the TEST key…
The current serial protocol selection is
displayed.
20. Press the ZERO key…BAUD is displayed. This stands for baud
rate.
21. Press the TEST key…
The current baud rate and parity selec-
tion is displayed.
16
22. Press the ZERO key…CAP is displayed. This stands for
capacity.
23. Press the TEST key…
The current capacity/resolution selection
is displayed.
24. Press the ZERO key…UNITS is displayed. This stands for unit-
of-measure.
25. Press the TEST key.
The current unit-of-measure LBS (for
pounds) or 1000G (for kilograms), is
displayed.
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26. When you are finished, press the ZERO
key, until DONE is displayed, then press the
TEST key to return to the top menu level…
Configuration Mode
The Configuration (CONF) Mode menu allows
scale configuration for your specific application
needs. The items you can configure are as
follows:
FILTERING (FILT) – Choose between FAST
and SLO filtering. SLO should be chosen in
areas susceptible to vibration. Choose FAST
filtering for more stable conditions.
Baud (BAUD) – Choose a baud and parity from
Table 2.
DIAG is displayed. Or close Switch 1 to
return to normal weighing mode.
Protocol (PROT) – Select the RS-232 communication protocol.
* Approved for use with 30 and 60 lb or 7, 15, 30 and
60 kg capacities only
Access the Menu mode as shown in Figure 3.
1. From the DIAG display, press the ZERO key
until CONF is displayed, or from the normal
weighing mode, move Switch 1 to the Menu
mode or the OPEN position; then press the
ZERO key until CONF is displayed.
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2. Press the TEST key…FILT is displayed.
3. Press the TEST key…
The current setting, FAST or SLO,
is displayed.
4. Use the ZERO key to toggle between the
two choices. Press the TEST key when the
choice you want is displayed. The choice is
accepted and the display shows the FILT
item.
5. Press the ZERO key…BAUD is displayed.
6. Press the TEST key…
The current baud and parity choice is
displayed.
7. Use the ZERO key to scroll the choices
found in Table 2. When the choice you want
is displayed, press the TEST key. The
choice is accepted, and the display shows
the BAUD item.
18
8. Press the ZERO key until…PROT is displayed.
9. Press the TEST key…
The current RS-232 communication
protocol is displayed.
10. Press the ZERO key to scroll through the
choices. When the choice you want is
displayed, press the TEST key. The choice
is accepted and the display shows the
PROT item.
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Calibration Mode
The Calibration (CAL) Mode menu lets you
calibrate your scale. The items in the calibration
menu are as follows:
POUNDS/KILOGRAMS (LBS or 1000 Gr) –
Selects the unit of measure of your calibration
test weights (lb or kg).
Step-by-Step
Instructions
for CAL Mode
CAPACITY (9.995, 15.005, 30.01, 60.02 etc.) –
Select the capacity of the scale.
Follow these steps to calibrate the scale. Refer
to Figure 3.
1. From the DIAG display, press the ZERO key
until CAL is displayed, or from the normal
weighing mode, move Switch 1 to the Menu
mode or OPEN position. Press the ZERO
key until CAL is displayed.
2. Press the TEST key…
50 H or 60 H is displayed. This is the AC
line frequency.
3. Press the ZERO key to toggle between the
choices. When the choice you want is
displayed, press the TEST key…
That choice is accepted and LBS or1000Gr is displayed.
4. Press the ZERO key to toggle between the
choices. When the choice you want is
displayed, press the TEST key…
The scale capacity is displayed.
(Example: 9.995)
If a different capacity selection is de-
sired, press the ZERO key to scroll
through the choices.
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5. When the desired capacity is displayed,
press the TEST key. . .
That choice is accepted and LOAD 0 is
displayed.
The capacity selected
must correlate with the
rated capacity of the
scale noted on the
serial tag.
If this procedure is
attempted without any
calibration weights
applied, the scale will
abort the process and
retain the original
calibration data.
6. Clear all weight from the scale platter and
press the TEST key…
After a brief wait LOAD xx is displayed.
Alternate calibration points can be
chosen using the ZERO key to scroll
between choices (see Table 1).
7. Place the appropriate calibration weights on
the scale and press the TEST key. After a
brief wait…
DONE is displayed.
8. Remove all calibration weights from scale.
9. Press the TEST key…
DIAG is displayed, or return Switch 1 to
the closed position. The scale returns to
normal weighing mode.
The scale is now tested, configured, and calibrated. It is ready for use in your application.
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Review/Test Scale Settings
The TEST key located on the front panel lets
you perform some basic system diagnostics, as
well as review the current system settings
IMPORTANT: If you
press and release the
TEST key, the display
will show the scales
model number,
version-revision, and
performs a display
test.
To review the current
system settings, press
and hold the TEST
until the display shows
dashes
“_ _ _ _.” Release the
TEST key and the
display will prompt
DISP and
the scale is now in the
Review/Test Mode.
Press the ZERO key to
move to the next item
in the menu
without having to access switches inside the
scale.
Press the TEST key to
select the displayed
item to run or view.
IMPORTANT: Internal
rocker switches will be
ignored until you exit
this special mode or
power reset the scale.
When finished running tests or viewing the
settings, press the ZERO key until DONE is
displayed. Then press the TEST key to return to
normal (i.e., weighing) mode of operation.
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Communication
The 6700 is capable of interfacing with an EIA
Standard RS-232, full duplex, asynchronous,
or smart device for output of weight data to an
ECR device. The 6700 9-pin style is capable
of RS-232 communication only.
Communications
Enabled
Serial Data
Transmission
Modem control lines
will not be supported
for RS-232
Serial commands will be responded to only
when the scale is in the ‘normal’ operating
mode and Switch 1 on the main board is in the
CLOSED position.
Baud Rates:
1200, 2400, 4800, 9600, or 19.2K
Word Length: 10 Bits
1 Start, 7 Data, 1 Parity, 1 Stop
Parity: Even, Odd, or None
The scale is DTE.
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RS-232 Interface
* Jmp1 and Jmp2 pins
are connected
internally on the scale
PCB connector.
Error Codes
The 9-pin version of the 6700 has DE type
female connector accessible at the rear of the
unit. The functional pinout of this connector is
compatible with a standard PC with a passthrough cable.
DE-9 Female Scale DE-9 Male Host
Pin Name Direction Pin Name Direction
1.JMP 1-1.DCDIN
2.TX DOUT2.RXDIN
3.RXDIN3.TXDOUT
4.JMP 1-4.DTROUT
5.SG-5.GRD-
6.JMP 1-6.DSRIN
7.JMP 2-7.RT SO UT
8.JMP 2-8.CTSIN
9.NC-9.RIIN
Any system errors detected by the scale will be
displayed as the letter E followed by a two-digit
error code. Press the TEST key to continue
operation. If a calibration error occurs, the only
way to clear it is by recalibrating the scale.
The error codes are broken down into two
hexadecimal numbers, with each bit defining a
single error condition. The error codes are
defined as follows:
Model 6700 Family User’s Manual
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If an E-02 ROM error
or E-04 RAM error
occurs, power the
scale off and then
back on. If it occurs
again contact your
Avery Berkel scale
service provider.
Troubleshooting
Perform the following steps in the order presented until the described problem is corrected.
No Power (Display is Blank)
1. Check that the primary side of the cord is
2. Replace the power supply.
3. Replace the display board.
4. Replace the main board.
plugged into the AC outlet, and the secondary side is properly connected to the power
jack on the back of the scale.
24
Missing or extra segments on display
1. Replace the display board.
2. Replace the main board.
Scale will not return to zero, or incorrect
weight is displayed
1. Press the ZERO key.
2. Check for interference of weighing platform.
3. Power down, remove all items from the
platter, and then power up the scale.
4. Recalibrate the scale.
5. Replace the load cell.
6. Replace the main board.
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Display shows unrecognized characters
1. Check software PROM for proper insertion.
2. Check display cables for the proper connection.
3. Replace PROM.
4. Replace the display board.
5. Replace the main board.
Display shows under “_ _ _ _” dashes
(Indicates that the scale is below zero or under
capacity.)
1. Verify that weigh platter is on the scale.
2. Press the ZERO key.
3. Power down, remove any items from the
platter, and then power up the scale.
4. Recalibrate the scale.
5. Replace the load cell.
6. Replace the main board.
Display shows center“_ _ _ _” dashes
(Indicates that the scale is outside zero capacity
of ±2%.)
1. Verify that weigh platter is on the scale.
2. Press the ZERO key.
3. Power down, remove any items from the
platter, and then power up the scale.
4. Recalibrate the scale.
5. Replace the load cell.
6. Replace the main board.
Display shows upper” _ _ _ _ “ dashes
(Indicates the scale is over capacity.)
1. Remove all items from the scale.
2. Press the ZERO key.
3. Power down, and then power up the scale.
4. Recalibrate the scale.
5. Replace the load cell.
6. Replace the main board.
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Scale is not transmitting data to the host
device
1. Check cable connection at both the rear
of the scale and the host device.
2. Check communication setting and baud rate
on both scale and software.
3. Perform I/O loopback test.
4. Replace the cable.
5. Replace the main board.
The ZERO key and the TEST key do not
function
1. Open display enclosure and verify that the
keypad cable is still installed correctly.
2. Replace the display panel.
3. Replace the display PCB.
4. Replace the display cable.
5. Replace the main PCB.
Spare Parts Listing
DESCRIPTIONPART NUMBER
Keyboard Panel56143-0018
Display PCB7405-15465
RS-232 PCB7405-14704-2
Power Supply - 6702/67101148-15535
Power Supply - 67201148-15536
RS-232 Cable - PC1140-13842
6700-7 Kg (15 lb) Loadcell7154-16323-07
6700-15 Kg (30 lb) Loadcell 7154-16323-15
6700-30 Kg (60 lb) Loadcell 7154-16323-30
6700-60 Kg (120 lb) Loadcell 7154-16323-50
Remote Display Kit7300-16577-04
Remote Pole Kit7200-14837
Remote Pole/Displ Kit 7’7300-16864-03
Remote Pole/Displ Kit 14’7300-16864-04
6702/6710 Fr/Rear Mt. Bkt.7200-14829
6700 Foot7075-10256
6702/6710 Frt Mt. Bkt.1067-17061
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Model 6700 Family User’s Manual
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Model 6700 Family User’s Manual
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Avery Berkel North America
1000 Armstrong Drive
Fairmont, MN 56031
PH Toll-Free: 800-237-1886
FAX Toll-Free: 800-237-2063
sales@AveryBerkelUSA.com
www.AveryBerkelUSA.com
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