Brecknell 67XXU Series User manual

67XXU
USB/Serial Scale Series
Service Manual
SOFTWARE VERSION 1.20
AWT35-501145
Issue AD

67xx Serial Scale_s_en_500145.book
Brecknell is part of Avery Weigh-Tronix. Avery Weigh-Tronix is a trademark of the Illinois Tool Works group of companies whose
ultimate parent company is Illinois Tool Works Inc (“Illinois Tool Works”). Copyright © 2014 Illinois Tool Works. All rights reserved.
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This publication was correct at the time of going to print, however Avery Weigh-Tronix reserves the right to alter without notice the
specification, design, price or conditions of supply of any product or service at any time.

67XXU USB/Serial Scale Service Manual 1
Table of Contents
Chapter 1 General Information and Warnings ........................................................................................ 3
About this Manual ..............................................................................................................3
Text Conventions ........................................................................................................ 3
Special Messages ....................................................................................................... 3
Warnings ............................................................................................................................ 4
Routine Maintenance ......................................................................................................... 4
Sharp Objects .................................................................................................................... 4
Cleaning the Indicator ........................................................................................................ 4
CE Certification .................................................................................................................. 5
Chapter 2 Installation ................................................................................................................................ 6
Connections ....................................................................................................................... 7
Display ......................................................................................................................... 7
Power Supply .............................................................................................................. 7
USB Port (Com 1) ....................................................................................................... 7
RS-232 Serial Port (Com 2) ........................................................................................ 7
Remote Display and Mounting ........................................................................................... 8
Mainboard .......................................................................................................................... 9
Definition of Connectors and Jumpers ........................................................................ 9
Chapter 3 Specifications ......................................................................................................................... 11
Available Models .............................................................................................................. 11
Outline Dimensions .......................................................................................................... 11
Mounting .......................................................................................................................... 12
Power Supply ...................................................................................................................12
Display ............................................................................................................................. 12
Keypad ...................................................................................................................... 12
Environment ............................................................................................................. 12
Load Cell Excitation ................................................................................................... 12
Approvals ......................................................................................................................... 12
Communication ................................................................................................................ 13
Analog Circuitry ................................................................................................................ 13
Capacity and Division ...................................................................................................... 13
Accuracy .......................................................................................................................... 13
Calibration Method ........................................................................................................... 13
Other Main Functions ....................................................................................................... 14
Chapter 4 Configuration .......................................................................................................................... 15
Front Panel ...................................................................................................................... 15
Keys ................................................................................................................................. 16
Navigating the Weigh Mode ............................................................................................. 17
Enter the Weigh Mode ............................................................................................... 17
Enter or Exit the HOLD Mode .................................................................................... 17
Zero ...........................................................................................................................17
Tare ...........................................................................................................................17
Preset Tare Weight ................................................................................................... 17
Clear Tare Weight ..................................................................................................... 17
Output Data (print to a computer or printer) .............................................................. 18
Display Gross or Net Weight ..................................................................................... 18
Change Weight Unit .................................................................................................. 18
Check Weight (compare feature) .............................................................................. 20
Navigating the Count Mode ............................................................................................. 20
Enter Count Mode ..................................................................................................... 20
Obtain Piece Weight .................................................................................................. 21
Hold Function ................................................................................................................... 22

2 67XXU USB/Serial Scale Service Manual
Activate the Hold Function ........................................................................................ 22
Access the Hold Mode .............................................................................................. 22
Hold Methods ............................................................................................................ 22
Display Software and Hardware Version ......................................................................... 24
Display Test ..................................................................................................................... 24
Keyboard and Buzzer Test .............................................................................................. 24
Serial Port 1/2 (COM1/2) Receiving Test ......................................................................... 25
Serial Port 1/2 (COM1/2) Transmitting Test ..................................................................... 25
Chapter 5 Setup Mode ............................................................................................................................. 26
Entering the Setup Menu ................................................................................................. 26
Navigating the Setup Menu .............................................................................................. 26
Setup Menu Parameters .................................................................................................. 27
CONFG Menu ........................................................................................................... 27
USER Menu .............................................................................................................. 32
CAL Menu ................................................................................................................. 42
MISC Menu ............................................................................................................... 44
TEST Menu ............................................................................................................... 44
Exit the Setup Menu ......................................................................................................... 45
Chapter 6 Calibration .............................................................................................................................. 46
Enter the Calibration Mode .............................................................................................. 46
Zero Point .................................................................................................................. 46
Linearity ..................................................................................................................... 47
Geographical Adjustment ................................................................................................. 48
Gravity Value ................................................................................................................... 50
Input or View Calibration .................................................................................................. 50
Weight Fine-tune .............................................................................................................. 51
Display ADC Output Code ............................................................................................... 51
Chapter 7 Serial Communication ........................................................................................................... 52
Communication Settings .................................................................................................. 52
Com Port 1 ....................................................................................................................... 53
Com Port 2 ....................................................................................................................... 53
Protocol ............................................................................................................................ 53
Transaction String ............................................................................................................ 53
Commands and Response .............................................................................................. 54
Parameter NCI-SCP01 .............................................................................................. 54
Parameter ECR-SCP02 ............................................................................................ 57
Parameter 8213-SCP03 ............................................................................................ 60
Parameter Multi ......................................................................................................... 63
Parameter EH-SCP (PS-60) ...................................................................................... 65
Parameter IBM .......................................................................................................... 66
Chapter 8 Legal for Trade ....................................................................................................................... 69
Physical Seal ................................................................................................................... 69
Audit Trail Parameters ..................................................................................................... 70
View Configuration Counter ...................................................................................... 70
View Calibration Counter ........................................................................................... 70
Chapter 9 Troubleshooting ..................................................................................................................... 71
Display Characters ........................................................................................................... 71
Display Symbols .............................................................................................................. 72
Error Messages and Troubleshooting .............................................................................. 73

67XXU USB/Serial Scale Service Manual 3
1 General Information and Warnings
1.1 About this Manual
This manual is divided into chapters by the chapter number and the large text at the top
of a page. Subsections are labeled as shown by the 1 and 1.1 headings shown above.
-The names of the chapter and the next subsection level appear at the top of alternating
pages of the manual to remind you of where you are in the manual. The manual name
and page numbers appear at the bottom of the pages.
1.1.1 Text Conventions
The keys used to interface with the 67XXU are located on the front panel of the
indicator. The keystrokes are shown in BOLD incased between brackets. (e.g. [ZERO])
Displayed messages appear in seven segment display type and reflect the case of the
displayed message. (e.g. confg)
1.1.2 Special Messages
Examples of special messages you will see in this manual are defined below. The
signal words have specific meanings to alert you to additional information or the relative
level of hazard.
CAUTION!
This is a Caution symbol.
Cautions give information about procedures that, if not observed, could result
in damage to equipment or corruption to and loss of data.
ELECTRICAL WARNING!
THIS IS AN ELECTRICAL WARNING SYMBOL.
ELECTRICAL WARNINGS MEAN THAT FAILURE TO FOLLOW
SPECIFIC PRACTICES OR PROCEDURES MAY RESULT IN
ELECTROCUTION, ARC BURNS, EXPLOSIONS OR OTHER HAZARDS
THAT MAY CAUSE INJURY OR DEATH.
NOTE: This is a Note symbol. Notes give additional and important information, hints
and tips that help you to use your product.

4 67XXU USB/Serial Scale Service Manual
1.2 Warnings
lAvoid lengthy exposure to extreme heat or cold. Your scale works best when
operated at normal room temperature. Always allow the scale to acclimate to
a normal room temperature before use.
lAllow sufficient warm up time. Turn the scale on and wait for a few minutes if
possible. This will give the internal components a chance to stabilize before
weighing.
lThese electronic scales are precision instruments. Do not operate near an
in-use cell phone, radio, computer or other electronic device. These devices
emit RF and can cause unstable scale readings. If your scale ever performs
poorly, try moving the scale to a different room or location.
lAvoid using in heavy vibration and airflow conditions.
lRead the weight reading in short time after loading. The output signature of
load cell and electronic circuit may be little influenced after weighing for a
long time.
1.3 Routine Maintenance
Always turn off the machine and isolate from the power supply before starting any
routine maintenance to avoid the possibility of electric shock.
1.4 Sharp Objects
Do not use sharp objects such as screwdrivers or long fingernails to operate the keys.
1.5 Cleaning the Indicator
IMPORTANT: This equipment must be routinely checked for proper operation
and calibration.
Application and usage will determine the frequency of calibration required for
safe operation.
Table 1.1 Cleaning DOs and DON’Ts
DO DO NOT
Wipe down the outside of standard products
with a clean cloth, moistened with water and
a small amount of mild detergent
Attempt to clean the inside of the indicator
Use harsh abrasives, solvents, scouring cleaners or
alkaline cleaning solutions
Spray the cloth when using a proprietary
cleaning fluid
Spray any liquid directly on to the display window

67XXU USB/Serial Scale Service Manual 5
1.6 CE Certification
Pending

6 67XXU USB/Serial Scale Service Manual
2 Installation
1. Unpack the scale and all components from the shipping box.
2. Remove the shipping screw from the under side of the scale base. Refer to
Figure 2.1.
Figure 2.1 Shipping Screw Location
3. Connect all necessary cables to the proper connectors. Refer to this section
for connection details.
4. Level the scale base using the four leveling feet. View the level bubble located
under the platform top.
DANGER: RISK OF ELECTRICAL SHOCK. BE SURE TO UPLUG THE
INDICATOR BEFORE REMOVING THE COVER OR OPENING THE UNIT.
REFER TO QUALIFIED SERVICE PERSONNEL FOR SERVICE.

67XXU USB/Serial Scale Service Manual 7
2.1 Connections
There are connectors located on the side of the scale for the power supply, USB port,
RS-232 serial port and display which is used for mounting the display remotely on a
wall or a desk.
Figure 2.2 View of Scale Connectors
2.1.1 Display
The indicator display can be removed from the scale and mounted on a wall or desk.
Refer to section 2.2 for details on mounting.
2.1.2 Power Supply
The 67XXU comes with an external AC to DC power adapter. Simply plug the AC
adapter into the DC6V power jack on the scale and then plug into a standard wall outlet.
2.1.3 USB Port (Com 1)
The USB connector is used as a virtual RS-232 port and USB power supply.
2.1.4 RS-232 Serial Port (Com 2)
The 67XXU comes standard with one full Bi-directional RS-232 serial port designed for
connection to either a PC or a serial printer.
lPin 2 = transmit
lPin 3 = receive
IMPORTANT: Make sure that the AC voltage and polarity appearing at the wall
outlet matches the input voltage as well as the polarity marked on the AC
adapter.

8 67XXU USB/Serial Scale Service Manual
The RS-232 port connector is a 9-pin female..
Figure 2.3 RS-232 Connector (Com 2)
2.2 Remote Display and Mounting
The indicator is connected to the front of the 67XXU. It can be removed however to
accommodate mounting on a wall or desk. Plug the display cable into the DISPLAY
connector.
Figure 2.4 Indicator Desk Mount
Figure 2.5 Indicator Wall Mount

67XXU USB/Serial Scale Service Manual 9
2.3 Mainboard
Figure 2.6 shows the main board connectors for the loadcell, RS-232 port, USB port,
power supply and battery.
Figure 2.6 67XXU Main Circuit Board
2.3.1 Definition of Connectors and Jumpers
Table 2.1 Loadcell Connector
Table 2.2 Adapter Power Input Connector (ADP)
Pin Description In/Out/Power Electrical Level
1 + excitation power output 5±0.3 VDC (≤0.12A)
2 + sense power input 5±0.3 VDC
3 - excitation power ground 0 VDC
4 - sense power input ≤0.5 VDC
5 + signal signal input 2.5±0.3 VDC
6 - signal signal input 2.5±0.3 VDC
7shield - -
Pin # Definition In/Out/Power Electrical Level
1 Adapter input voltage - (GND) Power ground 0VDC
2 Adapter input voltage + Power input 6.5 VDC (6-9VDC, ≥0.5A)

10 67XXU USB/Serial Scale Service Manual
Table 2.3 USB Connector (USB) Com 1
Table 2.4 RS-232 Port Connector (SIO) Com 2
Table 2.5 CAL Jumper Set
Pin Description In/Out/Power Electrical Level
1 GND of VDD power ground 0 VDC
2 USB D+ 0-5 VDC
3 USB D- 0-5 VDC
4 USB power power input 5±0.25 VDC
Pin Description In/Out/Power Electrical Level
2 RS-232 transmit on UART0 Output -12 to +12 VDC
3 RS-232 receive on UART0 Input -12 to +12 VDC
5 GND Power ground 0 VDC
Connected Pins Function
Push calibration enabled
No push calibration disabled

67XXU USB/Serial Scale Service Manual 11
3 Specifications
3.1 Available Models
3.2 Outline Dimensions
Figure 3.1 67XXU Dimension Drawing
Figure 3.2 67XXU Dimension Drawing with Indicator on a Column
6702U 6”x10” (15 or 30 lb)
6710U 10”x10” (15 or 30 lb)
6720U 12”x14” (15 or 30 lb)

12 67XXU USB/Serial Scale Service Manual
3.3 Mounting
lBracket
lRemote (optional cable required)
lColumn (option kit required)
3.4 Power Supply
lAC Adapter: 7-9VDC, ≥500mA, center positive
lUSB power supply if USB interface is installed
lWork current: ≤15mA (with backlight off, and no load cells)
m≤30mA (with backlight on, and no load cells)
m≤50mA (with backlight on and one 350 load cell)
3.5 Display
l51/2-digit,7-segment , 0.58" (15mm) LCDs
3.5.1 Keypad
l4 push buttons
3.5.2 Environment
3.5.3 Load Cell Excitation
3.6 Approvals
Working temperature -10°C to 40°C
Storage temperature -20°C to 70°C
Humidity 10 to 90% RH without condensation
Voltage 5VDC
Max. Current 20mA
NTEP 13-074
Measurement Canada AM-5912C

67XXU USB/Serial Scale Service Manual 13
3.7 Communication
3.8 Analog Circuitry
l24-bit A/D converter
lConversion Speed: 10Hz
lInput range: -15mV to +15mV
lOutput code:1mV input will output about 100,000 raw counts
lHardware low pass filter and 2 programmable digital low pass filters
3.9 Capacity and Division
lProgrammable
lMax display range: -199,999 to 199,999
lDivision number range for primary unit: 100-20,000
mDivision number range for second unit: 100-25,000 (division number will
be limited by REGUL setting)
lRecommended Sensitivity: >1µV/ display division
3.10 Accuracy
≤0.01%
3.11 Calibration Method
lSoftware calibration with long-term storage in EEPROM
lProvides smooth curve fit through four points
lCalibration can be done under kg or lb weight unit with 10% -100%FS
standard weight.
lWeight fine adjustment (± 10%)
lGeographic adjustment
Serial port1 Full-duplex RS-232
Optional Serial Port USB (Virtual RS-232)
Baud Rate Selectable: 1200-2400-4800-9600-19200-38400 bps
Data Output Format 8N1, 7O1, 7E1
Protocol programmable

14 67XXU USB/Serial Scale Service Manual
3.12 Other Main Functions
lProgrammable zero range
lProgrammable pre-set tare weight
lProgrammable automatic zero point tracking
lProgrammable motion detection window
lProgrammable auto-power off time, backlight working mode
lProgrammable hold function with peak weight holding and dynamic weighing
lAvailable check weighing mode
lAvailable parts counting mode
lAvailable units of measure: kg, lb, lb:oz, oz, g, PCS
lData comparison and indicator in weighing mode and parts counting mode
lProgrammable serial output content

67XXU USB/Serial Scale Service Manual 15
4 Configuration
To set up the indicator, you must first enter the appropriate menu mode. The front panel
keys become directional navigators to move around in the menus. See Table 4.2 for
details.
4.1 Front Panel
The front panel incorporates the display and keypad.
The annunciators used are incorporated in the display. The annunciator will be lit went
the mode is active.
Figure 4.1 67XXU Keypad and Display
Table 4.1 LCD Display Annunciators and Definitions
LCD Annunciator Description
Better known as the "Center of Zero" annunciator. It is lit when the scale is at the zero point
and the gross weight is 0.
NET Indicates net mode and the tare weight is not 0.
lb Indicates the current unit of measure is lb.
oz Indicates the current unit of measure is oz.
kg Indicates the current unit of measure is kg.
gIndicates the current unit of measure is g.
Pcs Indicates counting mode. Unit of measure is pieces.
HOLD Flashes when HOLD key is pressed. Remains permanently on when the Hold function has
become activated.
AC/CHG When battery is being used or charged, is fully charged or not installed.
OK Indicates when data compare is enabled and current data (weight, pieces or percent) is
between the specified upper and lower limits.

16 67XXU USB/Serial Scale Service Manual
4.2 Keys
The keyboard consists of four keys, some of which have multiple functions.
Table 4.2 Function of the Keys
Key Mode Condition Function
Weigh or count Press for less than 3 seconds Enter or exit HOLD/PRINT mode
Weigh or count Press [HOLD] + [ON/OFF] for more
than 3 seconds
Enter setup mode
Input data mode Press for more than 3 seconds Input decimal point
Input data mode Press for less than 3 seconds Rotate the flashed position from right to left
Menu selection mode Select next item of current menu
Weigh or count Press [HOLD] + [UNIT] for more than 3
seconds
Select working mode (weigh or count)
Weigh mode Press for less than 3 seconds Change weighing units: kg->lb->oz
lb:oz (not available in some conditions)
g (not available in some conditions)
kg (not be available in some conditions)
Count mode Press for less than 3 seconds To enter piece weight mode (by way of
sample or input directly)
Weigh or count Press for more than 3 seconds To input compare data (for weight or pieces)
of high and low limitation
Display voltage mode Press for more than 3 seconds To calibrate input voltage value
Display ADC code mode Select displaying code from:
no-filter, filter1, filter2
Input data mode Press to enter data one will be added to the flashing digit
Menu selection mode Select next item of current menu
Weigh or count Press for less than 3 seconds Tare function
Weigh or count Press for more than 3 seconds Input pre-set tare weight at selected weight
unit
Input data mode or
Menu selection mode
Press to enter data To confirm input data or current item
selection. Select next item of current menu or
next operation
Display ADC code mode Set or clear tare code
Power off mode Power on
Count or weigh Press for less than 3 seconds Zero function
Count or weigh Press for more than 3 seconds Power off
Input data Ignore current operation
Menu selection mode Return to last sub-menu
NOTE: To access the second function of the key, press and hold the key for more
than 3 seconds.

67XXU USB/Serial Scale Service Manual 17
4.3 Navigating the Weigh Mode
4.3.1 Enter the Weigh Mode
Press the [HOLD] + [UNIT] keys for 3 seconds. Use the [UNIT] key to choose the
desired mode and the [TARE] key to confirm selection and exit to the chosen mode.
4.3.2 Enter or Exit the HOLD Mode
Press the [HOLD] key for 3 seconds.
4.3.3 Zero
When the weight is stable and within the zero range, press the [ZERO] key to set a new
zero point. Refer to Table 4.3 for zero limitations.
4.3.4 Tare
When the gross weight is larger than zero and the scale is stable, press the [TARE]
key. The indicator will show a net weight of zero and the NET annunciator will be
illuminated. Refer to Table 4.3 for tare limitations.
4.3.5 Preset Tare Weight
Enter a preset tare weight by pressing the [TARE] key for more than 3 seconds.
Pr.Tar will be displayed and the NET annunciator flashes. Use the [UNIT] and
[TARE] key to input the desired tare weight and the [HOLD] key to move to the next
digit. The value entered must be larger than zero and there is no limitation to preset
tare weight. After the tare weight is entered the NET annunciator will illuminate. Refer
to Table 4.3 for tare limitations.
Note: This indicator can only save one tare weight. The new tare weight will
automatically replace the old one.
4.3.6 Clear Tare Weight
Remove any weight on platform and wait until the scale is stable. Press the [TARE] key.
Table 4.3 Zero and Tare Limitations
Standard Weight on
platform
Data in TARE
memory unit
key function
Tare key Zero key
USA ≤0 no No action Zero
yes Clear the tared weight
>0 no Tare
yes

18 67XXU USB/Serial Scale Service Manual
4.3.7 Output Data (print to a computer or printer)
When scale is stable press the [PRINT] key.
4.3.8 Display Gross or Net Weight
lIf the tare weight is not zero, the Net weight will be displayed.
lIf the tare weight is zero, Gross weight will be displayed.
4.3.9 Change Weight Unit
Press the [UNIT] key to select kg, lb, oz, lb:oz, g. Note: under some conditions oz,
lb:oz, g are not available. Please refer the following tables.
Canada ≤0 no No action Zero
yes Clear the tared weight
>0 no Tare
yes No action
Europe ≤0 no No action Zero
yes Clear the tared weight Zero and clear the
tared weight
>0 no Tare Zero
yes Zero and clear the
tared weight
None
(same with Europe)
≤0 no No action Zero
yes Clear the tared weight Zero and clear the
tared weight
>0 no Tare Zero
yes Zero and clear the
tared weight
Standard Weight on
platform
Data in TARE
memory unit
key function
Tare key Zero key
Zero can only be active when the scale is stable and weight is in SAZSM setting
range.
Tare can only be active when the scale is stable.
Clearing the Tare weight or Zeroing the scale will put the indicator into Gross mode.
Adding a Tare weight will put the indicator into Net mode.