Protocol : SIEMENS - FW537


 

Parameterization :

CDE adapter :

Modulation mode :

Transmission rates :

Hamming distance :

Tolerance limit :

Modulation :

Message gap :

PC-TxT level :

Data format :

switch setting  PDM

Digital-pulse-duration-modulation

25 - 2400 baud

4 / 4 ( variable )

0 - 50%

2.2 / 3.0

6.6 ( variable )

+12V / -12V

FW 537 M, FW 537 RGFW

Telegram description

The following two formats can be selected for the encoding of the telegram address :
1. FW537 M  Standard
  

2. FW 537 RGFW

5 bit (ZSC3-non-code - ten
5 bit (ZSC3-Non-code - once

10 bit dual coded

area 0 - 99
  

area 0 - 1023

Telegram structure

Transmission is MSB_FIRST

Information types

Telegrams in control- and monitoring direction can be distinguished by their length ; With the help of organization signs one can recognize general check , commands , messages and measurands

Further telegram types are characterized through different addresses. Since there exists no generally valid table for it however , in the program LIAN a list to the type identification must be created over menu item Setting | Information type or be loaded over File | Load | INFtyp.

command direction :  FW 537 requires no description in control direction
Monitoring direction :
type 09 = TDB_F537_EM1 
type 10 = TDB_F537_DM1 
type 11 = TDB_F537_MW8 
type 12 = TDB_F537_MW12 
type 13 = TDB_F537_ZW1 
type 14 = TDB_F537_ZW2 
type 15 = TDB_F537_TS1 

type 16 = TDB_F537_SM1 
type 17 = TDB_F537_SZ1 

type 18 = TDB_F537_SZ2 
type 19 = TDB_F537_EZ1 
type 20 = TDB_F537_EZ1 

single point information
double point information
measurements 8 bit
measurements 12 bit
counter type 1
counter type 2
trafo tap

protection message OZ5 = 1
protection time type 1 OZ5 = 0

protection time type 2
time tagged message
real time

The types 16 / 17 are lying on the same address and can be distinguished only by OZ5. Only one of these types must be declared.

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 command :
[ 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
[ E ] toggle control "on" ( BE bit ). Control "off" is automatically set or cleared.
[ A ] toggle control "off" ( BA bit ). Control "on" is unchanged.
[ S ] send message
[ ESC ] quit entry mask

It should be taken into account that the bit shifter doesn't change the message address and the information block ; previous settings are not lost. Furthermore its application is not useful with all message types ( only indications and fleetings ). Short message are not processed.

Transmission errors

*F:Blocklength :  The telegram is incorrect.
*F:Hamming code :   Faulty check code.
*F:Spike : The received sign is smaller than 20% of the short pulse.
*F:Time tolerance : The measured character length is beyond the tolerance set SIMO.
*F:2 out of 5-code : The address code ( 2 out of 5 ) is faulty.
 *F:Org-Sign : The BE-bit is equal to the BA-bit ( command ).
The last two error checks are not done with the general check.

 


MAYR Software

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Manual LIAN DOS


LIAN DOS Protocol Simulator and Analyzer
© Copyright 1991, 1996, 2001, 2006-2010 by Werner Mayr. All Rights reserved.