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ControlLogix Maintenance And Troubleshooting

Pre-Test


  1. Name three devices that can be connected to a discrete input module:




  1. Name three devices that you might find connected to a discrete output module:




  1. Name one device that can be connected to an analog input module:




  1. Name one field device that you would find connected to an analog output module:




  1. On a discrete input module, a status light is on. What does this indicate?




  1. On a discrete output module if a status light is on, what does this indicate?




  1. Name one use of the serial port (communication channel 0) on the front of the processor.




  1. What is the purpose of RSLinx software?




  1. What is the purpose of RSLogix 5000 software?




  1. What is the purpose of Tags (Data Files)?




  1. What is the purpose of Tasks (Program Files)?




  1. Define a BIT of memory:




  1. How many bits are available in a tag with the DINT data type?




  1. What instruction must be placed in the Main Routine so the Sub-Routines will execute?




  1. What are the five steps involved in performing an online edit if the processor is in remote run mode?





  1. If you have a motor that will not run when the operator pushes a start button, you may need to go online with the processor and locate the output in the ControlLogix program that energizes the motor. This allows you to see what other conditions must be met before the processor will energize the output. What features of RSLogix might you use to locate the motor's output in the ControlLogix project?




  1. In #16, you find that the reason for the failure is a bad thermal switch on the motor. Since you do not have any more thermal switches in stock, you decide to force the motor's output instruction on. What are some dangers with this, and what are some better options that you could have chosen.



  1. The processor is in Remote Run mode. You perform an online edit and inadvertently get the processor caught in an infinite loop. What will happen when your edits are tested?




  1. Due to the way the ControlLogix processor scans the I/O, programmers will sometimes have a routine for Input Buffering, and another for Output Buffering. What would be the purpose of these two routines?




  1. An operator informs you of variations in a product. You suspect the variations in product are due to a fluctation in temperature. What feature of RSLogix software would allow you to graph a temperature over time?




  1. If a neon lamp is wired directly to a triac output module, the neon lamp is always on even when processor is not calling for the output. What causes this, and how can it be corrected?




  1. What is the purpose of the battery on the processor?




  1. With a network of PLC's, it is possible to inadvertently download to the wrong processor. This can have disastrous results. What steps can you take to ensure you are not downloading to the wrong system?




  1. Name some communication protocols that may be used for peer to peer communication between networked PLC's.




  1. Name some communication protocols that may be used for communication between a processor, and I/O devices such as a remote chassis, drive, or robot.