Just received three mfx semaphore signals 70392, unpacked one, read all the instructions, including the single sheet stating that CS2 with 4.0 update has to be used for registration.

Checked the CS2 and, yes, it is above the 4.0, 4.1.2(3) in fact.



Followed the instructions

1. set the dip switches for address 35 (on 1, 2 & 6) before connecting to CS2 (as per instructions)
2. Connected the the brown and red wire to the two pin connection on the rear of the signal.
3. Connected to the track which was connected to the programming connection (as stated in the instructions)
3. Began the registration process, and voila, there it was registered (after that registered the other two signals....boy I'm on a roll )








Did a test, semaphore went up then down








First problem I encountered was which three pin connection do I use for the two red wires that control the current flow?

Looked at the diagram in the instructions and decided that it had to be the one next to the red/brown connection (Märklin instructions are so crappy).





Insulated the track pieces as shown and the wired up as instructed.







Then the trail began.

First with semaphore down, in stop (red) position.

Woohoo it worked, the loco stopped.

Then with the semaphore up, in go (green) postion.

Crap the loco stopped.

Scratched head, trying to figure out what I had done wrong.

Ahhh, maybe I used the wrong three pin connection at the rear of the signal

Eventually disconnected the two red wires (why do Märklin make these connections so fiddly and delicate ) and connected to the other three pin connection.

Double crap , it stopped again in the go (green) position.

Why wasn't the current flowing thriugh when signal was up/go/green ????

Re-read the instructions (about three times ) and noticed some instructions on CV, hopping that might give me an idea of why I'm having this problem.

Went to the CV and only 6 possible programming could be done (so much for setting Slow Movement CV39), and no wiser on what was causing my problems







I am at my wits end, can someone please advise on what I have done wrong, or whether I'm trying to do mfx signals on a CS2 that can't be done.


Help

Thanks for the quick reply

Not too sure what you mean by highlighted in the quote above.

Power to the test track is provided by red/brown wire connected under the track as normal (that track piece is connected to the test track at one end) and the brown/red wire is connected to the correct power outlet of the CS2.

Or are you saying that it needs a continuous loop connection?

Thank you, I will try that tomorrow....it's nearly bed time here

The PDF is in color (not that this helps much) and even there its not clear, but can be reasoned out if you make some assumptions.

The middle 2 pin port is a switch controlled connection that connects those 2 red wires - one of which goes to your isolated section, the other which goes to where you need to pull the digital track power. If that other place doesn't have digital track power (ie if the track power feed is on one side only, but not running through to the other side due to the isolated section, and no loop existing in the track) then you have only connected a dead central rail to the isolated section.



The signal is connecting the central power feed from the right end to to the central power feed in the isolated section in the diagram. (not via the control signal taken from from the central power feed from the left side.

Huge success, again many thanks to all.

All three signals are now mfx registered, very simple to do when it is explained to you. Either I'm blind (or stupid) or couldn't understand the provided instructions, but nowhere did I pick up on registering the signals with the mfx button.

And, yes, I am stupid , of course on a test track you require power on either end of the track...dohh!!!!

Once I realised this, and provided power on both ends, the signals worked marvelously

Still to work out the CV situation, but that can be on another day