Month: January 2021

How are floating point values converted in Schneider Electric energy meters?

Jovan Stosic January 4, 2021

The architecture of this number format is the following:

S E F
0 1_______8 9_______________________31

S: sign
E: exponent
F: faction (also referred to as the mantissa or significand)

calculation would be = (-1)^S * 2^(E [dec format]-127) * (1.F)[Base 10]

 

Source: How are floating point values converted in Schneider Electric energy meters?

How are floating point values converted in Schneider Electric energy meters? was last modified: January 4th, 2021 by Jovan Stosic

Free Modbus Master Simulator and Test Tool

Jovan Stosic January 3, 2021

Download archive into a folder. Then unpack the tarball:

tar xzf modpoll.tgz

The tarball contains multiple binaries for different CPU architectures. Add the version matching your system architecture to the path. Example for ARM platforms like Raspberry Pi:

export PATH=$PWD/modpoll/linux_arm-eabihf:$PATH

Then run modpoll:

modpoll -h

Source: Free Modbus Master Simulator and Test Tool

Free Modbus Master Simulator and Test Tool was last modified: January 3rd, 2021 by Jovan Stosic

Kaiser-Walzer

Jovan Stosic January 1, 2021

Kaiser-Walzer, Op. 437 (Emperor Waltz) is a waltz composed by Johann Strauss II in 1889. The waltz was originally titled Hand in Hand and was intended as a toast made in August of that year by Emperor of Austria Franz Joseph I on the occasion of his visit to the German Emperor Wilhelm II where it was symbolic as a ‘toast of friendship’ extended by Austria-Hungary to the German Empire.

Strauss’ publisher, Fritz Simrock, suggested the title Kaiser-Walzer since the title could allude to either monarch, and thus satisfy the vanity of both rulers. The waltz was first performed in Berlin on 21 October 1889. The original cover of the piano edition bore the illustration of the Austrian Imperial Crown.

https://en.wikipedia.org/wiki/Kaiser-Walzer

Kaiser-Walzer was last modified: January 1st, 2021 by Jovan Stosic