Need Help with PM-MCP/FCU V/S Set (write)

First of all, I'm trying to get this to work with the Phidget Rotary Encoder (I don't believe this is a Phidget or FS2Phidget issue).

This is regarding the PM MCP/FCU; I have no trouble using the Set (WRITE) offsets for IAS, Heading, Altitude and Mach. the 540C offset for V/S set (write) does not work for me.

Let me just start with this, does anybody have the 540C offset working with any encoder?

If it works for someone else, then it must be me. :confused:

Matt O.