Protocol : AEG - GEA Trans F202
|CDE adapter :
Modulations mode :
Transmission rate :
Tolerance limit :
PC - TxT level :
Telegram length :
|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- monitoring direction must be set.
Telegram structure :
|This telegram is of a defined length and
Length of signs is 1 ( corresponds "to sign not set" ) or 4 ( corresponds "to sign set" ).
E1 , E2 , E3 , E4
G1 , G2 , G3
|start pulse of length 4
single signs ( in this example only single sign No. 2 is
Group signs : Depending on the parameterization of your equipment , alternatively 1 or 2 grouped signs are set in a telegram. From this the control / monitoring group is worked out. In this example only G2 is set.
Completes the number of single signs to "even".
The final pulse has a defined length of 6.
LIAN / SIMO - Operating mode
|Default of directions ( control or monitoring ).|
|*F:Block length :||The received length of data block is not 35 pulses.|
|*F:Grouped sign :||Wrong number of grouped signs.|
|*F:Parity :||A received sign within a telegram was neither one , nor 4 bits long.|
|*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 or a received sign is longer than the final step the error message "time out" appears.|
|*F:Time tolerance :||A received step within a telegram was neither 1 nor 4 nor 7 bits long and was no spike or timeout.|
Wuerzburger Ring 39, D 91056 Erlangen
LIAN DOS Protocol Simulator and Analyzer
© Copyright 1991, 1996, 2001, 2006-2010 by Werner Mayr. All Rights reserved.