Protocol : Siemens - SAS


 

Parameterization

CDE adapter : 

Modulation mode :

Transmission rate :

Hamming distance  s /e : 

Tolerance limit :

PC-TxT level:

Telegram length :

Character distortion :

Number of address words 

Switch setting PDM  because of synchronous transmission

pulse-code-modulation synchronous

50 - 1200 baud

4 ( via longitudinal and lateral parity )

0 - 50%

logical 0 ( -12V )

defined , 9 * 11 bit = 99 bit

Can be paramererized in LIAN from 0% to 49%.

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Telegram structure

LIAN / SIMO - Operation mode

In LIAN the number of address words can be set ( 1 or 2 ). This affects the data interpretation. The transmission / reception level in LIAN must be parameterized correctly.

Background simulation ( empty telegrams )

In order to transmit in SIMO empty messages in the background the command "RTI < buffer number >" is to be used. Then SIMO transmits telegrams given in the buffer <buffer number> without interruption. The background simulation is only interrupted by transmitting a telegram ( e.g. command : SS , SF , SZ ). You can switch off  the background simulation by entering "RTI" without any further parameter.

Filter

In program FIPP you can set the pre-filter of the regarding channel to "ADRE H: # 000" in order to filter out empty telegrams during receipt. You will not receive further empty telegrams.

Transmission errors

*F:Block length : Message doesn't consist of 99 bits.
*F:TimeTolerance :

The measured character length is beyond  the tolerance set in LIAN and cannot be allocated to a number of bits. The sensitivity is adjustable via the parameter tolerance limit.

*F:Spike : The length of a received character is smaller than 20% of the length of a bit.
*F:Parity : The parity bit is wrong.
 *F:SYNC : The synchro word ( 0 111111111 1 ) was not received correctly.
*F:BlockCheckCode : Longitudinal parity ( LC ) is wrong.
*F:Start / Stop bit : Partition step was not received correctly.

 


MAYR Software

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Manual LIAN DOS


LIAN DOS Protocol Simulator and Analyzer
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