Filament Buffer questions

Bambu Lab P Series Bambu Lab P2S
1

My P2S has AMA 2 Pro and two AMS-HT, I’m adding TPU assist and wanted to “clean up” the tubes and 6 pin connections.

  1. My first question was whether it matters if the AMS Pro 2 could be in the upper or lower input - installation instructions show the Pro in the bottom input. However, does it matter and why?
  2. I will be using either the current 4 in1 or a new 2 in1 to feed the filament buffer.
  3. I will be using a 2 in 1 adapter for the printer input to have a dedicated tube for TPU. It’s easier to feed the assist from the 2nd 6 pin feed of AMS Pro via 6-4 adapter.
  4. This then leaves the 2nd 6 pin on the filament buffer free to feed the AMS-HT’s.
  5. With the AMS Pro and HT’s connected, the display panel shows all 6 spools and still has an icon for EXT. How would it know if I ever connect an external spool via the 4in1
  6. The I read this in the P2S FAQ.
    Q: The buffer of the P2S has two 6-pin ports on top. Does it support connecting two AMS/AMS 2 Pro/AMS HT units simultaneously?

The buffer does NOT support using two 6-pin ports to connect AMS/AMS 2 Pro/AMS HT units at the same time. One of the ports is a spare port, used for power supply and communication expansion of devices (e.g., time-lapse photography kits).

Why? I have been using them for the AMS-HT’s without issue. Is this just some out-of-date item or?

Sorry for all the questions

2

Well I decided that the FAQ was wrong. It works fine as I proposed above.

3

The cable connection path goes Printer → Buffer → AMS units (daisy chained together) → TPU Assist (using the special 6 to 4 pin cable)

All AMS units have two 6 pin connector sockets to allow daisy chaining, there isn’t a specific “input” or “output”, they are agnostic in that respect.

To your point #5, the printer would know you’re loading an external spool because you have to select it in the filament menu and select “load”.

Which specific part of the FAQ do you think is wrong?

4

As above. I know it works seems with my AMS 2 Pro, 2 times AMS-HT and I think the TPU assist. Haven’t tried printing with it yet but the lights come on. Seems that the FAQ needs updating.

5

The AMS’s register themselves in the order they were connected when first bought. So the first AMS will be A, second B 3rd C. Kf you reposition them in the daisy chan it will not change which is which. They deviated in their scheme with the HT and the spool hanger annoys me because it would be nice (IMO) if you could just turn it off in Studio/Handy as it is the manual hanger mounted on back of printer. Trifling but I never use it and would like to be able to turn off the visualization so I do not even see it