Zusi-Forum

I think I read that the 103 in Zusi has an AFB, am I wrong?.
I tried to activate it as I normally do in other locomotives, but I can't use it.
Can someone please explain to me how to activate the AFB and how to set the speed in the 103 please?
I then noticed that by rotating the traction regulator control to the end of its travel, a lever located on the right side of the regulator wheel is also activated.
What is it about?
Thank you.

103 has three modes as indicated in the switch in the bottom right corner of the wheel:
Primary manual mode (mouse wheel up / Num 8/2/5 above zero) => set speed with wheel
Reserve manual mode (mouse whell / Num 8/2 below zero: Increase powe (lowest switch state) or decrease power (uppest switch state)
AFB mode: Activate with "A" when wheel is in zero; then set speed by wheel (Num 8/2/5) (No separeate AFB lever with 7/4/1)

Thank you again!