Copyright Goodheart-Willcox Co., Inc. 206 Programmable Logic Controllers: Hardware and Programming Activity 2 In this activity, you will create a PLC ladder logic diagram that carries out the following operations: • If counter zero (C5:0), which is connected to pushbutton one (PB1), counts five fi times and counter one (C5:1), which is connected to pushbutton two (PB2), counts three times, then the green pilot light (Green_PLT) turns on for 10 seconds and the bell rings five times. fi Step 1. Draw the relay logic diagram for this circuit. Step 2. Assign PLC input/output ports to the devices. Then, complete the PLC I/O connections on your PLC lab station. Step 3. Use the Rockwell RSLogix 500 software to create the PLC ladder logic diagram. Step 4. Download the PLC ladder logic diagram into the PLC station. Place the PLC in the run/monitor mode. Step 5. Demonstrate your working PLC system for your instructor. Activity 3 In this activity, you will create a PLC ladder logic diagram that carries out the following operations: • Use the switch (SW1) to reset the system. • If the green pushbutton (PBG) and red pushbutton (PBR) are each pressed three times, the red pilot light (Red_PLT) and green pilot light (Green_PLT) will turn on. • The lights will stay on for only three seconds. Step 1. Draw the relay logic diagram for this circuit. Step 2. Assign PLC input/output ports to the devices. Then, complete the PLC I/O connections on your PLC lab station. Step 3. Use the Rockwell RSLogix 500 software to create the PLC ladder logic diagram. Step 4. Download the PLC ladder logic diagram into the PLC station. Place the PLC in the run/monitor mode. Step 5. Demonstrate your working PLC system for your instructor.