Adams Postal Equipment MDW 250L User Manual

Adam Equipment  
MDW – 250L  
DIGITAL HEALTH AND FITNESS SCALE  
Software EMW-250L-20080601  
ADAM EQUIPMENT CO. LTD.  
p.n. 4302, Rev. C5, January 2012  
© Adam Equipment Company 2012  
 
CONTENTS  
1.0  
2.0  
3.0  
4.0  
5.0  
5.1  
5.2  
6.0  
7.0  
8.0  
9.0  
INTRODUCTION.......................................................................................... 4  
TECHNICAL SPECIFICATIONS .................................................................. 4  
DISPLAY AND KEY DESCRIPTIONS.......................................................... 5  
SETTING UP THE SCALE........................................................................... 6  
FUNCTION................................................................................................... 5  
WEIGHING ............................................................................................... 5  
MEASURING HEIGHT ............................................................................. 6  
CALIBRATION.............................................................................................. 6  
USER PARAMETERS.................................................................................. 8  
RS232 COMMUNICATIONS ........................................................................ 9  
ERROR MESSAGES ................................................................................. 13  
10.0 WARNING.................................................................................................. 13  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
1.0 INTRODUCTION  
The MDW 250L scale is a Digital Health and Fitness Scale.  
It is an accurate electronic device with advanced design and stable  
performance.  
It is designed to measure both the weight and the height of a person.  
2.0 TECHNICAL SPECIFICATIONS  
Maximum capacity  
Minimum capacity  
Scale division  
250 kg / 550lb  
2 kg / 4lb  
0.1Kg / 0.2lb  
Height range  
Division of measurement  
Display  
80 cm-210 cm  
0.5 cm  
LED display  
Size of platform  
Overall dimension  
Deadweight  
375 X 275 mm  
535 X 275 X 1040 mm  
13 kg  
Environment for Use  
Temperature: 5ºC-40ºC;  
Humidity: <85RH  
12vAC 500mA adapter  
Power  
Battery  
Internal, re-chargeable  
6V 4Ah, 5 hours approx.  
Calibration  
External calibration through the keypad.  
Bi-directional RS232  
Communications  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
3.0 DISPLAY AND KEY DESCRIPTIONS  
KEYS  
FUNCTIONS  
[On / Off  
/Zero]  
To turn the scale on or off.  
To zero the scale if the display drifts from zero.  
[Tare]  
To tare the scale, if necessary.  
[Units]  
[Print /  
Hold]  
To toggle the weighing unit between Kg and Lb.  
To lock the reading even if the person to be weighed is moving and  
also to print the weight details out.  
DISPLAY  
Kg  
Lb  
DESCRIPTIONS  
Indicates when the scale is weighing in Kilograms.  
Indicates when the scale is weighing in Pounds.  
Hold  
Indicates when the scale has held the weight reading shown on the  
display. It will flash until it locks into the stable reading when it will  
then remain on constantly when it has held the displayed reading.  
When the battery is low, this symbol will be light up. Connect the  
adapter to recharge the battery.  
CH  
AC  
The charge light will be on when the battery is recharging.  
This indicates when the scale is being used with the AC adapter.  
ZERO  
This indicator will be displayed in the left corner when the scale  
reaches zero.  
NET  
The Net weight is displayed, Tare weight is at zero.  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
4.0 SETTING UP THE SCALE  
Take the scale out of the box.  
Unwind the load cell cable (number 2 on the diagram).  
Run the cable up through the pillar from the base of the scale.  
Use the 4 screws (number 3 on the diagram) to mount the pillar to the  
indicator.  
Connector the plug and socket (number 6 and 7 on the diagram) and  
insert the pole into the pole holder.  
Secure the pole to the pole holder by inserting the 2 screws (number 9  
on the diagram).  
Secure the height rod into the height rod holder (number 4 and 8 on the  
diagram).  
1
indicator  
2
cable to  
indicator  
3
screw  
4
height rod  
5
pole  
6
plug  
7
socket  
9
10  
screw  
platform  
8
height rod  
holder  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
5.0 FUNCTION  
5.1 WEIGHING  
Place the Scale on an even floor and press the [On/Off] key.  
The instrument performs a self-test after which it is ready for operation.  
Press the [On/Off] key and the machine switches off.  
The person to be weighed can step on to the platform once the scale  
shows 0.0 on the display. The weight will be display in Kg. or lb.  
depending on the units chosen by the user.  
If the weighing value is to be tared press the tare key to remove the  
weight value from the display.  
Press the [Units] key for changing the weighing unit to kg or lb. The  
LED will indicate the chosen weighing unit.  
Overload display: When “FULL” appears on the display, it shows that  
the load on the platform is over the maximum capacity. Under these  
circumstances, it is necessary to reduce the load otherwise the sensor  
or the platform will be damaged.  
Hold Function: To lock the weighing result, press the [Print/Hold]  
key. The LED will flash until a stable reading has been obtained and  
then it will light up constantly. To release the function, press the  
[Print/Hold] key again.  
Print Function: To send the weighing result to a printer or computer  
press the [Print/Hold] key when the [Print/Hold] key has been set up  
in the parameter section to work as print function.  
(Print function is only applied for scale with RS232 interface)  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
5.2 MEASURING HEIGHT  
While measuring the height, it is necessary to pull up the measuring  
board at a right angle with the inside tube.  
When the tube is pulled out straight, it is sufficient to measure the  
height form 80-136cm. The number can be obtained upon the conjoint  
place where the upper part of middle tube screw meets with the inside  
tube scale.  
Further, if the middle tube is pulled out straight, it is possible to  
measure the height from 136-210cm. The reading can be obtained at  
the conjoint place where the upper part of outside tube screw meets  
with the middle tube scale.  
6.0 CALIBRATION  
Before calibrating the scale, you should ensure that you have a known weight for  
calibration.  
1. When in normal weighing mode with the scale at zero press and hold down  
[TARE] and [ON / OFF] keys to enter the calibration mode.  
2. If the calibration switch is in the off position on the main PCB inside the scale, the  
indicator will show ‘CAL.OFF” and then exit this mode. If the indicator shows”  
CAL-?”, the scale is ready for calibration, showing the calibration switch is in the  
on position. If the calibration switch is in the Off position open up the indicator  
and move the switch to the On position. See diagram on page 8.  
3. When the indicator shows ” CAL-?”, press the [TARE] key to confirm and go to  
next step, or press the [ON / OFF] key to exit the calibration mode.  
4. When ‘0.0’ is displayed the scale will begin to calibrate the scale’s zero-point.  
Ensure that there is no load or weight on the scale’s platform . Press the [TARE]  
key to confirm, or press the [ON / OFF] key to exit this mode.  
5. A few seconds after the [TARE] key has been pressed in step 4 the scale will  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
show ‘250.0kg’ or ’500.0lb’ depending on which unit you chosen, this is the  
default calibration weight from the factory. Press the [UNIT] key to select the  
calibration weight unit that you want to calibrate in. Press the [ON / OFF] key to  
exit the calibration mode at this point or press the [Print/Hold] key to choose a  
different calibration weight value (50kg, 100kg, 150kg, 200kg, 250kg or 100lb,  
200lb, 300lb, 400lb, 500lb); Then put on the weight that you selected and press  
the [TARE] key to confirm the chosen standard weight that was selected earlier.  
The displayed data will flash on the display and if the scale accepts the  
calibration data it will calculate and store the information into the EEPROM. If an  
error has occurred, the scale will display “CAL. Er” and return back to step 4 for  
re-calibration. If the loaded weight is not within the range of 95% to 105% of the  
weight value you selected, the scale will not calibrate but display “CAL. Er” and  
return back to step 4 for re-calibration. )  
6. Check the calibration by putting the weight that you calibrated at back on the  
scale, if it is off repeat the calibration process again.  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
7.0 User Parameters  
This indicator has 4 parameter settings that can be selected.  
1. When the scale is in normal weighing mode, press and hold down the [ON / OFF]  
key and the [UNIT] key for 3 seconds until ‘SEtUP’ is shown on the display.  
2. When in the SETUP mode, press the [Print/Hold] key to change the flashing  
digits, and [TARE] key to confirm the flashing digits and move to the next  
parameter setting. Press the [ON / OFF] key to exit the set up mode.  
3. Parameters setting summary:  
Parameter  
x/xy Factory Set  
Setting  
Auto-off time:  
A.o.t.  
00-15  
05  
No auto-off = 00.  
01-15 minutes auto-off time.  
0 = Only Print Function  
1 = Only Hold Function  
2 = both HOLD and PRINT function (pressed  
down less 3s,this key works as Print  
function; pressed down more than 3s,this  
key works as HOLD function)  
Hold work time:  
0 = no time limit.  
1 = 10 seconds  
2 = 30 seconds  
3 = 60 seconds  
4 = 120 seconds  
0 = No RS232 Function.  
1 = Continuously outputs display data.  
2 = Output display data when PRINT pressed  
3 = Bi-directional communication (the scale  
receives and executes commands from the  
HOST device)  
P.H.  
H.t  
0,1,2  
1
0-4  
0-3  
0
0
S.F.  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
8.0 RS232 Communications  
(Only applied for scale with RS232 interface)  
The Interface parameters are:  
Connection details are:  
RS-232 output of weighing data  
ASCII code  
Connector: 9 pin d-subminiature socket  
Pin 3 Output  
9600 Baud rate (fixed)  
1 start bit, 8 data bits,1 stop bit  
No Parity  
Pin 2 Input  
Pin 5 Signal Ground  
8.1RS-232 connection between the Scale and the Host:  
Scale -----------------------Cable---------------------------Host  
(DB9 female)--------(DB9 male)----(DB9 female)--------(DB9 male)  
TXD 2  
RXD 3  
GND 5  
NC 1  
NC 4  
NC 6  
NC 7  
NC 8  
NC 9  
2
3
5
1
4
6
7
8
9
2
3
5
1
4
6
7
8
9
2 RXD  
3 TXD  
5 GND  
1
4
6
7
8
9
Note: The indicator pin1,4,6,7,8 and 9 are not connected.  
The RS232 function will only operate if PH has been set to 0 or 2.  
8.2 When Parameter S.F. in section 7 is set to 0 :  
No RS232 function. The scale will not transmit or receive any data although the  
scale is equipped with RS232. The RS232 function can be only activated when the  
scale is in normal weighing mode.  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
8.3 When Parameter S.F. in section 7 is set to 1 :  
Continuous output of the current displayed reading and unit, and no data is  
received. The output format is as below:  
<LF>< reading, minus, decimal point, weight unit>GR<CR><EXT>  
Or <LF>< reading, minus, decimal point, weight unit>NT<CR><EXT>  
8.4 When Parameter S.F. in section 7 is set to 2 :  
Manually outputs displayed data when PRINT is pressed. The output format is as  
below:  
<LF>< reading, minus, decimal point, weight unit>GR<CR><EXT>  
Or <LF>< reading, minus, decimal point, weight unit>NT<CR><EXT>  
8.5 When Parameter S.F. in section 7 is set to 3 :  
The baud rate and data format are fixed with responses to serial commands being  
within 300 milliseconds. One second should be adequate for use as a time-out  
value by a remote (controlling) device.  
8.5.1 The length of the weight field will be a 7 digit weight data, one for minus sign,  
one for decimal point, two for measuring unit (e.g. “lb”, “kg”). Units of measure  
abbreviations are always lower case.  
If the weight is overcapacity, the scale will return nine ‘^’ characters (the field of  
minus sign, decimal point, weight data is filled by ‘^’).  
If the weight is under capacity, it will return nine ‘-’ characters (the field of minus  
sign, decimal point, and weight data is filled by ‘_’).  
If the zero point has an error, it will return nine ‘-’ characters.  
The character will be ‘-’ for negative weight or a space character for positive  
weight. A minus sign follows after the first digit.  
Unused leading zero’s before digits are suppressed.  
8.5.2 Key to symbols used  
<LF> Line Feed character (hex 0AH)  
<CR> Carriage Return character (hex 0DH)  
<ETX> End of Text character (hex 03)  
<SP> Space (hex 20H)  
H1H2H3 Three status bytes. Refer to Table1 for definition.  
© Adam Equipment Company 2012  
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<p> Polarity character including minus sign for negative weight and a space  
character for positive weight  
W1-W7 weight data  
<dp> decimal point  
U1U2: measure units, kg, lb  
8.5.3 Commands and response  
(1) Command: W<CR> (57h 0dh)  
Response:  
<LF>^^^^^^u1u2<CR><LF>H1H2H3<CR><ETX>---over capacity  
<LF>______u1u2<CR><LF> H1H2H3 <CR><ETX>---under capacity  
<LF>---------u1u2<CR><LF> H1H2H3<CR><ETX>---zero-point error  
<LF><p>w1w2w3w4w5w6<dp>w7u1u2<CR><LF>H1H2H3<CR>  
<ETX> ---Scale is stable, and the current weight unit is kg or lb. With or  
without decimal point and the position is as per the P9 setting and current  
unit.  
(2) Command: S<CR> (53h 0dh)  
Response: <LF> H1H2H3<CR><ETX>  
(3) Command: Z<CR> (5ah 0dh)  
Response: Zero function is activated and it returns to current scale status, the  
same as pressing the ZERO/ON/OFF button:  
<LF> H1H2H3<CR><ETX>  
If ZERO function cannot be activated, it will return to current scale status.  
(4) Command: T<CR> (54h 0dh)  
Response: TARE function is activated, and then returns scale status. the same  
as pressing the TARE button:  
<LF> H1H2H3<CR><ETX>  
If TARE function cannot be activated, it will return to current scale status.  
(5) Command: U<CR> (55h 0dh)  
Response: Changes units of measure and returns scale status with new units,  
the same as pressing the UNIT button. The new measuring unit  
should be allowed to be used as per P11 setting.  
<LF>u1u2<CR><LF> H1H2H3<CR><ETX>  
(6) Command: X<CR> (58h 0dh)  
Response: power off the scale the same as pressing the ON/OFF button to  
turn off the scale.  
(7) Command: all others  
Response: Unrecognized command  
<LF>?<CR><ETX>  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
Table1: The status bits definition:  
Bit  
Byte 1 (H1  
)
Byte 2 (H2  
)
Byte 3 (H3)  
0= not under  
capacity  
01=normal work  
mode  
0=stable  
0
1= not stable 1= under capacity 10= hold work  
mode  
00=not define  
11= not define  
0= not at zero  
point  
1= at zero point 1= over capacity  
0= not over  
capacity  
1
2
3
0= gross weight  
1= net weight  
always 0  
always 0  
0= eeprom OK  
1= eeprom  
error  
always 0  
always 0  
4
5
6
7
always 1  
always 1  
always 0  
parity  
always 1  
always 1  
always 1  
Parity  
always 1  
always 1  
always 0  
parity  
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
9.0 Error Messages  
1. 0¯ ¯ ¯ ¯ ¯  
2. 0_ _ _ _ _  
3. Ad¯ ¯ ¯¯  
4. Ad _ _ _ _  
5. EEP.Er  
Zero point is over the setting range  
Zero is below the setting range  
ADC is over max. range;  
ADC is below min. range;  
There is an error in the EEPROM  
There is an error in calibration  
The capacity will be displayed  
The battery voltage or input power is below 5.6V.  
6. CAL.Er  
7. CAP.--  
8. Lo.bAt  
9. FULL  
The capacity has been exceeded by the person  
on the scale.  
10.0 WARNING  
Do not dismantle the weighing machine without following the necessary  
instructions.  
Do not jump while standing on the platform. This may damage the sensor  
inside.  
Do not move the weighing machine violently and abruptly. It is  
recommended to move and put down the weighing machine gently.  
It is suggested to wipe the stains with soft cloth soaked with detergent and  
to wipe later with soft cloth too. Do not use organic solutions and boiled  
water to wipe the stains. Do not use water for cleaning.  
Keep the weighing machine in a dry and clean environment. Do not  
expose it outdoor or use it in locations near fire, under direct sunshine or  
with high temperature.  
When lifting the height meter, it is suggested to pull it straight along the  
pipe without using excessive force.  
© Adam Equipment Company 2012  
Page 15  
Rev C5, January 2012  
 
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
© Adam Equipment Company 2012  
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Rev C5, January 2012  
 
Manufacturer’s Declaration of Conformity  
This product has been manufactured in accordance with the harmonised European standards,  
following the provisions of the below stated directives:  
Electro Magnetic Compatibility Directive 2004/108/EC  
Low Voltage Directive 2006/95/EC  
Adam Equipment Co. Ltd.  
Bond Avenue, Denbigh East  
Milton Keynes, MK1 1SW  
United Kingdom  
FCC COMPLIANCE  
This equipment has been tested and found to comply with the limits for a Class A digital device,  
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection  
against harmful interference when the equipment is operated in a commercial environment. The  
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in  
accordance with the instruction manual, may cause harmful interference to radio communications.  
Operation of this equipment in a residential area is likely to cause harmful interference in which case  
the user will be required to correct the interference at his own expense.  
Shielded interconnect cables must be employed with this equipment to insure compliance with the  
pertinent RF emission limits governing this device.  
Changes or modifications not expressly approved by Adam Equipment could void the user's  
authority to operate the equipment.  
WEEE COMPLIANCE  
Any Electrical or Electronic Equipment (EEE) component or assembly of parts intended to be  
incorporated into EEE devices as defined by European Directive 2002/95/EEC must be recycled or  
disposed using techniques that do not introduce hazardous substances harmful to our health or the  
environment as listed in Directive 2002/95/EC or amending legislation. Battery disposal in Landfill  
Sites is more regulated since July 2002 by regulation 9 of the Landfill (England and Wales)  
Regulations 2002 and Hazardous Waste Regulations 2005. Battery recycling has become topical  
and the Waste Electrical and Electronic Equipment (WEEE) Regulations are set to impose targets  
for recycling.  
© Adam Equipment Company 2012  
Page 18  
Rev C5, January 2012  
 
ADAM EQUIPMENT is an ISO 9001:2000 certified global company with more than  
35 years experience in the production and sale of electronic weighing equipment.  
Adam products are predominantly designed for the Laboratory, Educational, Health  
and Fitness, retail and Industrial Segments. The product range can be described as  
follows:  
-Analytical and Precision Balances  
-Compact and Portable Balances  
-High Capacity Balances  
-Moisture analysers / balances  
-Mechanical Scales  
-Counting Scales  
-Digital Weighing/Check-weighing Scales  
-High performance Platform Scales  
-Crane scales  
-Health and Fitness Scales  
-Retail Scales for Price computing  
For a complete listing of all Adam products visit our website at  
© Copyright by Adam Equipment Co. Ltd. All rights reserved. No part of this  
publication may be reprinted or translated in any form or by any means without the  
prior permission of Adam Equipment.  
Adam Equipment reserves the right to make changes to the technology, features,  
specifications and design of the equipment without notice.  
All information contained within this publication is to the best of our knowledge timely,  
complete and accurate when issued. However, we are not responsible for  
misinterpretations which may result from the reading of this material.  
The latest version of this publication can be found on our Website.  
© Adam Equipment Company 2012  
Page 19  
Rev C5, January 2012  
 

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