Protocol : SIEMENS - FW 517


 

Parameterization :

CDE adapter :

Modulation mode :

Transmission rate :

Parity :

tolerance limit :

Modulation ratio :

Message gap :

PC-TxT level :

Telegram types :

Switch setting PDM

Digital-pulse-duration-modulation

50 - 2400 baud

odd / even ( variable )

0 - 50%

2.6 ( variable )

7.8 ( variable )

+12V / -12V

short telegram ( 33 signs ) , long telegram ( 53 signs )

Telegram structure

MSB_FIRST is to be transmitted

Abbreviations :
ST:

LT:

ML / MW:

RUE:

LF:

AFS:

Start sign ( = 1 )

Long telegram

Message / Measurand

Transfer

Long decontrol

Anreizfolgesignal

KT:

SO:

BE:

BA:

TS:

     

Short telegram

Special character

Command on

Commmand off

Partition control

   

Az - Ez:

Ae - Ee:

IZn:

VZn:

2e7 - 2e0:

Address ten ( 2 out of 5 )

Address one ( 2 out of 5 )

Information sign

Sign with measurand

Value of measurand

Particular features

In case of cyclic transmission SIMO the blocking time determinated LIAN is followed between two telegrams  ( independently of the command "fe" ).

During receipt a break of at least the blocking time parameterized in LIAN is expected between two telegrams. If the blocking time is parameterized too short receipt failures may occur.

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"
[ arrow-right ] n bit to the right
[ arrow-left ] n bit to the left
[ arrow-up ] increase message address by 1
[ arrow-down ] reduce message address by 1
[ S ] send message
[ ESC ] quit entry mask
It should be taken into the account that the bit shifter doesn't change the message address and the information block ; previous settings are not lost.

Transmission error

*F:Block length : The telegram length is incorrect.
*F:Parity : One of the check signs is wrong.
*F:Timetolerance :  The received sign cannot be identified clearly ( => parameter "tolerance limit" in LIAN ).
*F:Spike : The received sign is < 20% of a short pulse.
*F:2 out of 5-code : The address is faulty.
*F:SYNC : The start sign is incorrect.

 


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.