PLC program field debugging 8 points of method

1、To check the wiring and verify the address To be carried out point by point, to ensure that the correct. May not check with electricity, that is to check the line, more trouble. Can also check with electricity, plus the signal, to see whether the action status of the electronic control system to meet the planning intentions. 2、Check the analog input and output See whether the input and output modules are correct, whether the operation is normal. If necessary, you can also use standard instruments to check the accuracy of the input and output. 3、Check and test the indicator Control panel, such as indicators, should first correspond to the indicator lights show to check. On the one hand, check whether the light is bad, on the other hand, check whether the logical relationship is correct. Indicator light is a mirror reflecting the operation of the system, first adjust it, will provide convenient for further debugging. 4, check the manual action and manual control logic relationship After completing the above debugging, the manual action and manual control logic relationship debugging can be carried out. To check the output point of each manual control, whether there is a corresponding output and the action corresponding to the output, and then see if the manual control can be completed. If there is a problem, solve it immediately. 5、Semi-active operation If the system can be actively operated, then first adjust the semi-active operation can be completed. Debugging can be advanced step by step. Until the completion of the entire control cycle. Which process or link problems, start to solve the problem of which process or link. 6、Active operation After completing the semi-active debugging, you can further debug the active operation. To investigate a few more work cycles to ensure that the system can operate correctly and without error. 7、Analog debugging, parameter confirmation The above debugging is the project of logic control. This is the system debugging, the first to adjust through. After the completion of these debugging, you can start debugging analog and pulse control. The most important thing is to select the appropriate control parameters. Generally speaking, this process is relatively long. To be patient, the parameters should also be a variety of choices, and then select the best. Some PLC, its PID parameters can be obtained through self-tuning. But this self-tuning process, is also the need for appropriate time to complete. 8, finish all the above process The whole debugging is basically considered complete. But it is better to check some anomalous conditions again. Look at the abnormal conditions or some illegal operations that are difficult to avoid, whether it will stop maintenance or alarm prompts. When conducting anomalies, be sure to give full consideration to the safety of equipment and people! The entire commissioning is basically considered complete. But it is best to carry out some anomalous conditions again. See if there are abnormal conditions or some illegal operations that are difficult to avoid, whether it will shut down maintenance or alarm prompts. When carrying out anomalous view, must take into account the safety of equipment and people!