Hello, this is a basic inexpensive a/c digital Piko model from the early millenium. Item #57211.
The factory set address is 78. It runs fine. This decoder has no load compensation, and only reversing headlights. No marker lights.
The instrructions say an ESU intellibox, or Marklin 6021 can be used to set the address. The digital mode can be set for 80, or 255 addresses with a longer reversing knob hold.
It reverst back to analog mode with a conventioanl transformer, and back to digital mode with the 6021. The rear lights flash after an 8 secomd hold on the reversing knob, but the address will not change. It jus takes off at full speed with no control until the stop button is pressed and the address changed back to 78.
I put it on the program track of my CS3, and it read the decoder, and added 3 additional macro settings for a total of 6 to the configuration menu, but I don't know why, or if they are active, or which one is for the address.
If anyone can help, thank you in adavance.