When Start PB is pressed, Oven with address O:2/0 is started.
RUNG002 and RUNG003 are used to operate bit shift register and Spray with address O:2/1.
I:1/0 and I:1/1 are mounted such that they are detected together. When Part is present, I:1/0 and I:1/1 both goes high setting bit B3:0/0. Shifting of this itself is operated by I:1/0 Hanger switch. So every time a hanger is detected, bit is shifted left.
From proximity to capping machine, station distance is 3 steps. Hence bit B3:0/2 of B3:0 register operates spray solenoid.
R6:0 is a control register where all the operations are handled.
