Adam Equipment MDW Digital Physician Scales MDW300LREVA2 User Manual

							Page 11 
8.0  RS232 COMMUNICATIONS 
    
The Interface parameters are: 
 
Connection details are: 
 
 
8.1  RS-232 connection between the Scale and the Host : 
          DB9 female  RXD   pin 3          
TXD   pin 2         
GND   pin 5         
Note: Pins 1, 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 r eceive any data although the scale is 
equipped with RS232. The RS232 function can be only  activated when the scale is in 
normal weighing mode.   
RS-232 output of weighing data  
ASCII code 
9600 Baud rate (fixed) 
1 start bit, 8 data bits,1 stop bit 
No Parity Connector:  9 pin d-subminiature socket  
Pin 2    Output 
Pin 3    Input 
Pin 5    Signal Ground  
						

							Page 12 
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:  < 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 displayed data when PRINT is press ed. The output format is as below: 
< reading, minus, decimal point, weight unit>GR  
Or < reading, minus, decimal point, weight unit >NT 
  
8.5  When Parameter S.F. in section 7 is set to 3 :  
 
The baud rate and data format are fixed with respon ses 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 w eight 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 retur n nine ‘^’ characters (the field of minus 
sign, decimal point, weight data is filled by ‘^’).   
  If the weight is under capacity, it will return nin e ‘-’ 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 
 Line Feed character (hex 0AH)   
 Carriage Return character (hex 0DH) 
 End of Text character (hex 03) 
 Space (hex 20H) 
H1H2H3 Three status bytes. Refer to Table1 for defi nition. 
  Polarity character including minus sign for ne gative weight and a space character 
for positive weight 
W1-W7 weight data 
   decimal point  
						

							Page 13 
U1U2: measure units, kg, lb 
8.5.3  Commands and response 
(1) Command: W  (57h 0dh)   
Response: 
①^^^^^^u1u2H1H2H3---over capaci ty 
①______u1u2 H1H2H3 ---under cap acity 
①---------u1u2 H1H2H3---zero-point error 
①< 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 > 
 ---Scale is stable, and the current weight un it is kg or lb. With or without 
decimal point and the position is as per the P9 set ting and current unit.  
 
(2) Command: S  (53h 0dh)  Response:  H1H2H3   
(3) Command: Z  (5ah 0dh)  Response: Zero function is activated and it returns  to current scale status, the same 
as pressing the  ZERO/ON/OFF button: 
 H1H2H3 
If ZERO function cannot be activated, it will retur n to current scale status. 
 
(4) Command: T  (54h 0dh)  Response: TARE function is activated, and then retu rns scale status, the same as 
pressing the  TARE button: 
  H1H2H3 
If TARE function cannot be activated, it will retur n to current scale status. 
 
(5) Command: U  (55h 0dh)  Response: Changes units of measure and returns scal e 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.  
u1u2 H1H2H3  
(6) Command: X  (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 
         ? 
    
						

							Page 14 
Table1: The status bits definition:  
Bit  Byte 1 (H
1)  Byte 2 (H2)  Byte 3 (H3)  
0 0=stable  0= not under 
capacity  01=normal work  
mode 
10= hold work 
mode         
00=not define                 
11= not define  
1= not stable  1= under capacity 
1 
0= not at zero 
point  0= not over 
capacity 
1= at zero point 1= over capacity 
2 always 0  always 0  0= gross weight 1= net weight 
3 
0= eeprom OK  
always 0  always 0 1= eeprom 
error 
4 always 1  always 1  always 1 
5 always 1  always 1  always 1 
6 always 0  always 1  always 0 
7 parity  Parity  parity 
  
    
						

							Page 15 
9.0  ERROR MESSAGES 
   
1. 0¯ ¯ ¯ ¯ ¯     Zero point is over the setting range 
2. 0_ _ _ _ _      Zero is below the setting range 
3. Ad¯ ¯ ¯¯     ADC is over max. range; 
4. Ad  _ _ _ _      ADC is below min. range; 
5. EEP.Er     There is an error in the EEPROM  
6. CAL.Er      There is an error in calibration 
7.  CAP .--     The capacity will be displayed  
8.  Lo.bAt      The battery voltage or input power is below 5.6V . 
9. FULL     The capacity has been exceeded by the person  
on the scale. 
    
10.0 WARNING 
 
·  Do not dismantle the weighing machine without foll owing the necessary 
instructions.  
 
·  Do not jump while standing on the platform. This m ay damage the sensor 
inside. 
 
·  Do not move the weighing machine violently and abr uptly. Always move and put 
down the weighing machine gently. 
 
·  Wipe any stains with a soft damp cloth using a det ergent, then wipe clean with 
a dry soft cloth. Do not use organic solutions or b oiling water to clean stains. Do 
not use a water spray for cleaning. 
 
·  Keep the weighing machine in a dry and clean envir onment. Do not expose it to 
outdoor use or use it in locations near fire, under  direct sunshine or with high 
temperature. 
 
·  When lifting the height meter, extract it directly  upwards without using excessive 
force. 
 
·  Do not lift the scale using the height pillar. Lif t by the base only. 
    
						

							Page 16  
						

							Page 17 
WARRANTY INFORMATION    
 
Adam Equipment offers Limited Warranty (Parts and Labour) for the components which fail due 
to defects in materials or workmanship.  Warranty starts from the date of delivery. 
 
During the warranty period, should any repairs be n ecessary, the purchaser must inform their 
supplier, or Adam Equipment Company. The company or  its authorised Technician reserves 
the right to repair or replace the components at any of its workshops depending on the severity 
of the problems. However, any freight involved in s ending the faulty units or parts to the service 
centre should be borne by the purchaser. 
 
The warranty will cease to operate if the equipment  is not returned in the original packaging 
and with correct documentation for a claim to be processed. All claims are at the sole discretion 
of Adam Equipment. 
 
This warranty does not cover equipment where defect s or poor performance is due to misuse, 
accidental damage, exposure to radioactive or corrosive materials, negligence, faulty 
installation, unauthorised modifications or attempted repair or failure to observe the 
requirements and recommendations as given in this U ser Manual. Additionally rechargeable 
batteries (where supplied) are not covered under warranty. 
        
Repairs carried out under the warranty does not extend the warranty period. Components 
removed during the warranty repairs become the comp any property. 
        
The statutory right of the purchaser is not affected by this warranty. The terms of this warranty 
is governed by the UK law. For complete details on  Warranty Information, see the terms and 
conditions of sale available on our web-site.  
						

							© Adam Equipment Company 2014             Page 1    
						

							© Adam Equipment Company 2014      
   
 
 
Manufacturer’s Declaration of Conformity 
 
Adam Equipment Co. 
Maidstone Road, Kingston  Milton Keynes, MK10 0BD  United Kingdom 
 
This product has been manufactured in accordance wi th the harmonised European standards, 
following the provisions of the below stated direct ives: 
 
2004/108/EC, Electro Magnetic Compatibility  
Directive   Standard EN61326-1:2013, Electrical 
Equipment for Measurement, Control and  
Laboratory Use – EMC requirements – Part 1:  
general requirements.  
2006/95/EC, Low Voltage Directive 
Standard EN61010-1:2010, Safety  
requirements for measurement, control and 
laboratory use equipment – Part 1: General 
requirements.   
2011/65/EC, RoHS, on the Restriction of the  
use of certain hazardous substances in 
electrical and electronic equipment  
  
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 fr equency energy and, if not installed and used in 
accordance with the instruction manual, may cause h armful interference to radio communications.  
Operation of this equipment in a residential area i s likely to cause harmful interference in which cas e 
the user will be required to correct the interferen ce 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 users 
authority to operate the equipment. 
 
 
WEEE COMPLIANCE 
 
DO NOT DISPOSE OF IN GENERAL WASTE 
Any Electrical or Electronic Equipment (EEE) compon ent or assembly of parts intended to be 
incorporated into EEE devices as defined by Europea n Directive 2012/19/EU must be recycled or 
disposed of using techniques that do not introduce  hazardous substances harmful to our health or 
the environment as listed in Directive 2011/65/EC o r amending legislation. 
Battery disposal must be performed according to loc al laws and restrictions. 
     
						

							© Adam Equipment Company 2014      
 
 
ADAM EQUIPMENT is an ISO 9001:2008 certified global company with  more than 
40 years experience in the production and sale of e lectronic weighing equipment.  
  
Adam products are predominantly designed for the La boratory, Educational, Health 
and  Fitness,  Retail  and  Industrial  Segments.  The  pr oduct  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 o ur website at 
www.adamequipment.com 
 
 
      
© Copyright by Adam Equipment Co. Ltd.  All rights  reserved.  No part of this 
publication may be reprinted or translated in any f orm or by any means without the 
prior permission of Adam Equipment.   
Adam Equipment reserves the right to make changes t o the technology, features, 
specifications and design of the equipment without  notice. 
 
All information contained within this publication i s to the best of our knowledge timely, 
complete and accurate when issued.  However, we are  not responsible for 
misinterpretations which may result from the readin g of this material. 
 
The latest version of this publication can be found  on our Website. 
  www.adamequipment.com