Protocol : Mauell - ME8008


 

Parameterization :

CDE adapter :

Modulation mode :

Baud rate :

Telegram types :
  

Modulation :

Parity :

Tolerance limit :

Message gap :

Start pulse :

PC-TxT level :

switch setting  PDM

Digital-pulse-duration-modulation

50 - 2400 baud

Telegram without start bit ( 59 characters )
Telegram with  start  bit     ( 61 characters)

2.6 ( variable )

odd / ungerade ( variable )

0 - 50%

7.8 ( variable )

yes / no

+ 12V / - 12V

Telegram structure

Particular features

With the operating mode " spontaneous " a start bit must be put in front of the telegram. The length amounts to 2 long-signs. With it must be considered that the number of bits of the telegram becomes uneven.Therefore, a stuff-bit must be set in front of  the parity-bits.

  

Abbreviations
ORG

ML

MW

GA

OA

TGW  

LP

organization telegram

message

measurement value

general query

organization query

telegram repetition 

parity long pause

DS

OZ

IZ

VZ

ADR

LZ

  

shift bit

organization character

information character

sign (+ / -)

address

parity long sign

  

Bit shifter

In SIMO you can activate a bit shifter via the command 'bs'. It enables you to set a bit conveniently into the information block of the relevant telegram. When exceeding the information area the message address is automatically increased or reduced.

In the window 'bit shifter' you can use the following commands :
[ 1-9 ] define interval n  
[ Pfeil-rechts ] n bit to the right
[ Pfeil-links ] n bit to the left
[ Pfeil-oben ] increase message address by 1
[ Pfeil-unten ] reduce message address by 1
[ S ] send message
[ ESC ] quit entry mask

It should be taken into account that the bit shifter doesn't change the message address and the information block; previous settings are not lost.Furthermore its application is not useful with all message types ( only messages and commands ). 

Transmission errors

*F:SYNC : The start character is incorrect.
*F:Blocklength : Telegram length is incorrect.
*F:ZeitTolerance :    The measured character is beyond the tolerance set in LIAN.
*F:2out of 5-Code : The address code ( 2out or 5 ) is faulty.
*F:Parity : One of the check signs is wrong.
*F:Spike :  The received sign is < 20 % of a short sign.

 


MAYR Software

Wuerzburger Ring 39,  D 91056 Erlangen

Manual LIAN DOS


LIAN DOS Protocol Simulator and Analyzer
© Copyright 1991, 1996, 2001, 2006-2010 by Werner Mayr. All Rights reserved.