Research on Output Value Correction of Current Output Module in Industrial Control System
In order to solve the problem of correcting the analog loop of the industrial control system in the construction site,the method and process of correcting the output value of the current output module of the industrial control system using a customized excel ta-ble,a process tester and a host computer with WINCC human-computer interface are studied.Firstly,a special experimental plat-form is built to simulate the working circuit of DC current signal in the industrial control system.Then,the output dead zone of the current output module is measured,and the corresponding relationship between the output value of the current output module and the target output current value of the actuator is recorded.Finally,the calculation process is input into the excel table,and the verification correction formula is solved.The experimental results show that the calculated output value of the current output mod-ule is corrected according to the target output current value of the actuator,which can make the actuator achieve higher execution accuracy,and more conveniently and quickly solve the analysis and correction of the output value of the current output module in the field commissioning stage.
current outputanalog output modulefunction relationshipindustrial control system
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