Protocol : AEG - Geadat 81


 

Parameterization :

CDE adapter :

Modulation mode :

Transmission rate :

Tolerance limit :

PC-TxT level :

Telegram length :
  

Switch setting PDM because of  synchronous transmission

pulse-code-modulation synchronous

50 - 2400 baud

0 -50%

-12V / +12V

short telegram : 14 bit
long telegram : 67 bit

Telegram structure :

Telegram description :
SYNC

Telegram length
  

Telegram types
  

Parity
  

Check polynomial

identification of  telegram end :

synchro word  ( 4 bit , '1010' )

14 by short telegrams, 
67 signs by long telegrams

long telegram ( TL-bit = 1 ) 
short telegram ( TL-bit = 0 )

short telegram : 1 Parity bit ( uneven )
long telegram : Hamming code check

x14 +x9 + x8 + x6 + x5 + x4 + x2 + x + 1

final bit  = 1
   

Transmission errors

*F:Hamming code : Incorrect check code.
*F:Parity : Parity bit is incorrect.
*F:SYNC : The synchro word is not correct. 
*F:Telegram length : The telegram length was exceeded.
*F:Time tolerance : The measured length of signs is outside  of the parameterization set in LIAN.

 


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.