Protocol : AEG - GEA Trans F203


 

Parameterization :

CDE adapter :

Modulation mode :

Transmission rate :

Tolerance limit :

PC-TxT level :

Telegram length :

Direction :
   

Switch setting PDM

Digital-pulse-duration-modulation

50 - 1200 baud

0 - 50%

-12V / +12V

Defined , 35 pulses of variable duration

For a sure identification of telegrams control- or monitoring direction must be set.

Telegram structure :

This telegram is of a defined length with the following structure :
  • Start sign              ( length 4 short signs )
  • 16 single signs ( EZ )- and 16 grouped signs ( GZ ) alternately , beginning with a single sign with the logical level "low" and finally a grouped sign with the logical level "high".

The length of the sign is 1 ( corresponds to "sign not set" ) or 4 ( corresponds to "sign set" ).

  •  Parity sign   ( SOZ ) ( length 1 or 4 )
  •  Final sign     ( length 7 )

SYNC  

Telegram types  
  
  

Identification of telegram end 

Parity  

Particular features  
   
   

by a long sign (4 bit ) 

control telegram
monitoring telegram
measurement telegram

7-bit sign as final step
  

Parity bit completes the number of single signs to even

The telegram contains exactly two grouped signs. The control telegram has an additional single sign. Monitoring and measurement telegrams are distinguished by the position of grouped signs in a telegram. 

LIAN / SIMO - operation mode

Default of direction ( control or monitoring ).

Transmission errors

*F:Block length : The received length of the data block  is not 35 pulses.
*F:Single signs : Wrong number of single signs (only control direction ).
*F:Grouped signs : Wrong number of grouped signs.
*F:Parity : Control-step is wrong.
*F:Final sign : Final-step is wrong
*F:Spike : The length of the received sign is < than 20% of the length of a short sign
*F:SYNC : The start pulse is not 4 bits long
*F:TimeOut : 
  
If during telegram reception the maximum permissible time without signal change on the transmission line is exceeded the error message "time out" appears.
*F:Timetolerance : A received step in a telegram was neither one nor 4 or 7 bits long

 


MAYR Software

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LIAN DOS Protocol Simulator and Analyzer
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