Adam Equipment MDW Physician Scales MDW250LREVE User Manual

© Adam Equipment Company 2011              Page 10   
 
6.0  CALIBRATION 
  
Before calibrating the scale, you should ensure tha
t you have a suitable 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 “
[AL.OFF” and then exit this mode. If the indicator...

© Adam Equipment Company 2011              Page 11   
 
7.0  USER PARAMETERS 
  
This indicator has 4 parameter settings that can be
 selected. 
 
1. When the scale is in normal weighing mode, press an d 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...

© Adam Equipment Company 2011              Page 12   
 
8.0  RS232 COMMUNICATIONS 
(Only applied for scale with RS232 interface) 
   
The Interface parameters are:
 
  Connection details are: 
 
 
8.1  RS-232 connection between the Scale and the Host : 
      Scale -----------------------Cable----------- ----------------Host 
    (DB9 female)-------- (DB9 male) ---- (DB9 femal e) -------- (DB9 male) 
TXD 2      2      2     2 RXD  
RXD 3     3      3     3 TXD 
GND 5     5      5     5 GND 
NC  1      1...

© Adam Equipment Company 2011              Page 13   
 
8.3  When Parameter S.F. in section 7 is set to 1 :  
Continuous output of the current displayed reading  and unit, and it does not receive 
any data. The output format is as below:  < reading, minus, decimal point, weight unit>GR  
Or < reading, minus, decimal point, weight unit >NT 
    8.4  When Parameter S.F. in section 7 is set to 2 :  
Manually outputs display data when PRINT is pressed . The output format is as 
below:  < reading, minus,...

© Adam Equipment Company 2011              Page 14   
  Polarity character including minus sign for ne
gative weight and a space 
character for positive weight 
W1-W7 weight data  
   decimal point 
U1U2: measure units, kg, lb 
8.5.3  Commands and response 
(1) Command: W  (57h 0dh)   
Response: 
^^^^^^u1u2H1H2H3---over capaci ty 
______u1u2 H1H2H3 ---under cap acity 
---------u1u2 H1H2H3---zero-point error 
< L F > < p > w 1 w 2 w 3 w 4 w 5 w 6 < d p > w 7 u 1 u 2 < C R > < L F > H 1 H 2 H 3 < C R >...

© Adam Equipment Company 2011              Page 15   
 
Table1: The status bits definition:  
Bit  Byte 1 (H
1)  Byte 2 (H2)  Byte 3 (H3)  
0=stable  0= not under 
capacity 0 
1= not stable  1= under capacity 
0= not at zero  point  0= not over 
capacity 
1 
1= at zero point 1= over capacity 
01=normal work  
mode 
10= hold work 
mode         
00=not 
define                 
11= not define  
0= gross weight 2 always 0  always 0  1= net weight 
0= eeprom OK  
3 1= eeprom 
error  always 0  always 0 
4...

© Adam Equipment Company 2011Page 16 
9.0  ERROR MESSAGES 
1.0
00 0 ¯ ¯  ¯  ¯  ¯  zero point is over the setting range 
2.0
00
0 _ _ _ _ _  zero is below the setting range 
3.Ad
AdAd
Ad ¯ ¯  ¯¯  ADC is over max. range; 
4.Ad
AdAd
Ad  _ _ _ _  ADC is below min. range; 
5.EEP.Er
EEP.ErEEP.Er
EEP.Er  there is an error in EEPROM  
6.[
[[
[A\b.Er A\b.ErA\b.Er
A\b.Er there is an error in calibration 
7.[
[[
[AP APAP
AP .-- The capacity will be displayed  
8.\bo.bAt
\bo.bAt\bo.bAt
\bo.bAt The voltage of...

© Adam Equipment Company 2011Page 17  

© Adam Equipment Company 2011 
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. 
Maidstone Road, Kingston, Milton Keynes, MK10 0BD  United Kingdom 

F

CC COMPLIANCE 
This  equipment  has  been  tested  and  found  to  comply  w
 ith  the  limits  for  a...

© Adam Equipment Company 2010 
ADAM  EQUIPMENT  is  an  ISO  9001:2008  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, Medical, 
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...