OT: Siemens L+ & M

Ok, as we all know a lot of connections on siemens equipment have the letters L+, M and PE or ground symbol.

We all know what they mean, an what should be connected but I was asked today a simple question.

What does the 'M' stand for, is it an abbreviated German word? I know it's the 0V reference.

My German is fairly good, but I'm struggling to think of any word that begins with M that would describe it's function. As I'm a curious guy, it's just something I'd like to know, if anyone on here knows?

See below

http://www.plctalk.net/qanda/showthread.php?p=646926

geniusintraining said:

See below

http://www.plctalk.net/qanda/showthread.php?p=646926

Click to expand...

Perfect thanks.

Wonder why it did not show up when I searched for it? Anyway, I have the answer I was looking for.

Rob... said:

Perfect thanks.

Wonder why it did not show up when I searched for it? Anyway, I have the answer I was looking for.

Click to expand...

I ended up finding the link on Google... I also found your question, funny how fast Google scans the website and then adds it to the search

geniusintraining said:

I ended up finding the link on Google... I also found your question, funny how fast Google scans the website and then adds it to the search

Click to expand...

I don't know about funny, it is often helpful and sometimes scary.