7 Application Instructions API 50-99 8. Scan latched signal display 9. Settings of n : ＋ : Positive logic (negative polarity) output － : Negative logic (positive polarity) output 10. The polarity of transistor output and the polarity of the 7-segment display input can be the same or different by the setting of n . DVP-PLC APPLICATION MANUAL 7-85 Positive logic (negative polarity) Negative logic (positive polarity) Y output (latch) Output signal Y output (latch) Output signal 1 0 0 1 Groups of 7-segment display 1 group 2 groups Y output of BCD code ＋ － ＋ － Scan latched signal display ＋ － ＋ － ＋ － ＋ － n 0 1 2 3 4 5 6 7