Question 20 (3 points) Examine this "live" display of a Siemens S7-300 PLC's program, and from this determine all bit statuses represented by the color highlighting in this ladder logic program: I1.1 I0.5 Q0.1 10.2 I1.1 Q0.6 HZH HO) What is the status of Q0.1? 0 unable to determine Question 21 (3 points) Suppose we have a Koyo "CLICK" PLC connected to three momentary-contact pushbutton switches as shown in this illustration: CLICK Koyo CO-02001-D C1 24 VDC PWR RUN ERR 000 PORT 1 x3 x4 RUN STOP 12 13 Y4 TX1 RX1 AD1V TX2 AD11 RX2 ADZY PORT 2 ADZI PORT 3 RS-485 ACOM DAIV + TX3 DA11 RX3 DAZV LG DAZI 24V What is the actuation status (i.e. pressed versus released) of Switch B, given the "live" display of the ladder logic program shown here: X1 X2 pressed released (unpressed) unable to determine X3 Y1 Question 22 (3 points) Determine if Circuit 2 will operate correctly, or if it is wired incorrectly: Circuit 1 Circuit 2 Circuit 3 Load Load Correct Wired incorrectly unable to determine Circuit 4 Load Load Question 23 (3 points) Determine if Circuit 3 will operate correctly, or if it is wired incorrectly: Circuit 1 Circuit 3 Load Load + HilH Correct Wired incorrectly unable to determine Circuit 2 Circuit 4 Load Load +