7. What physical changes would be required to system wiring if the PLC system of problem 5 had to be modified to operate

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7. What physical changes would be required to system wiring if the PLC system of problem 5 had to be modified to operate as problem 6? 8. Draw the ladder logic rung for a circuit in which INI, IN2, and IN3 all have to be ON or IN1, IN2, and IN3 all have to be OFF in order for OUT1 to energize. 9. It is desired to implement a switch system similar to a three-way switch system in house wiring; that is, a light may be turned ON or OFF from either of two switches at doors on opposite ends of the room. If the light is turned ON at one switch, it may be turned OFF at the other switch and vice versa. Draw the ladder logic rung that will provide this. Define the two switches as IN10 and IN11 and the output that will control the light as OUT18.
IN3 and IN5 are both ON or both OFF. 11. The truth table, Table 3-2, shows all the possible combinations for the inputs IN1, IN2, and IN3 shown in Figure 3–19 with each row being a unique combination of the inputs being ON or OFF (a 1 indicates the input is in an ON condition and a 0 indicates an OFF condition). Complete the table by writing the state (1 or 0) of OUT1 for each input combination. Reminder: AN/C contact is closed when its input is OFF a
INI IN2 IN3 OUTI 0 0 0 0 0 1 0 1 0 I I 0 1 1 1 0 0 1 0 1 1 1 1 0 1 1 1 FIGURE 3-19 Ladder Diagram for Problem 11 IN1 IN2 OUT1 카 IN2 IN3 카 카
a Table 3-3 Problem 12 Truth Table INI IN2 IN3 OUT2 12. Draw a ladder diagram that will cause OUT2 to be ON under the conditions shown in the cruth table, Table 3-3. (Hint: It may help to write a Boolean expression.) Be sure to simplify the ladder so that it uses the minimal number of relay contacts. 0 0 0 1 0 0 0 0 0 0 1 0 1 1 1 0 0 1 1 0 1 0 1 1 0 0 0