What (if any) LCS Modules Needed for Legacy Switch and Block Control?

I presume if the switches are "brand new" that they are TMCC command capable, thus don't need anything for LCS control.  However, you may want to add the Lionel STM2 to monitor the actual switch position of the switches for accurate position feedback to the LCS application.

Lionel's ASC2 manual has a diagram for wiring an uncoupling track.  Since the ASC2's relays are rated for 20A, they are suitable for the controlling the operating track rails.  Here's a thread on how to do it.

As GRJ stated, the newer production of Fastrack switches are Command Controlled.  No ASC2 is required.   The STM2 is recommended.

Hello GRJ and Tracker John,

Thank you both for your respective replies on my questions:

(1) re: ASC2 not being needed if I have new Fastrack switches Remote/Command: Thanks for confirming. I do also plan to add STM2 when I go further with LCS application and WiFi.

(3) re: ASC2 and Fastrack Operating/Uncouple Tracks: I saw the 2019 post on Operating / Uncoupling track connected to ASC2. I realize I am still learning a lot about electrical connections, relays, etc. but from the last entry in the post by "Sparty1225" with pic (see copy below) I could not tell if this solution fully works - his comment infers that with jumper the loco shorts, and without the jumper the ASC2 will not activate - sounds like an incomplete solution.

What am I missing? Does this work, or not, or is there a piece still missing?

Finally - any credence from either of you or others may be reading this on my Question (2): Do I understand correctly that I can wire blocks (e.g. sidings) to be powered on/off either using “ASC2” modules in accessory mode, or using “BPC2” modules? What are the Pros and Cons of both choices if they are both valid?

- Ken

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