Copyright Goodheart-Willcox Co., Inc. 108 Programmable Logic Controllers: Hardware and Programming 0000 0003 0002 0001 Stop Red pushbutton Motor #1 Motor #1 Motor #2 O:0 O:0 I:0 I:0 O:0 0 Temperature switch I:0 3 1 0 0 Green pushbutton I:0 2 1 End O:0 2 Stop Red pushbutton Motor #2 O:0 I:0 I:0 1 Temperature switch I:0 3 1 0 Stop I:0 0 Temperature switch I:0 3 Motor #1 O:0 0 Temperature switch I:0 3 White light Goodheart-Willcox Publisher Figure 6-31. PLC ladder logic diagram for the relay logic diagram shown in Figure 6-29. 4. Right-click instruction I:0/0 and select Force On to force the input instruction I:0/0 to return to its normal open state. Both outputs should now be turned off. 5. Right-click instruction I:0/3 and select Force Off. The white light will turn off and the motors will be in the jog mode. Right-click instruction I:0/2 and select Force On. The normally open I:0/2 is forced closed and motor #2 turns on. Right-click instruction I:0/2 and select Force Off. This should turn off motor #2. Remember that the force instruction must be used with extreme caution. Even though the force instruction is a powerful tool for troubleshooting, using the force instruction in an industrial plant has the potential to cause fatal accidents. 6.9 Creating and Printing PLC Program Reports In this section, you will learn how to create reports for PLC projects. You will explore different report options available for the Allen-Bradley PLC software (RSLogix 500). You will configure the printer and its settings. Then, you will preview the reports