摘要：本次设计是对装料小车顺序控制的应用介绍，该设计采用德国西门子公司

Abstract: <br>This design is an introduction to the application of the sequential control of the loading trolley. The design uses the programmable controller S7-1200 of Germany's Siemens as the main control body to complete the automatic loading and unloading of the trolley at three specific positions according to requirements Control and corresponding workpiece detection, and require the combination with MCGS touch screen. The design requirements are as follows: <br>1. No matter where the trolley is at any position of the conveyor belt, it will first return to warehouse No. 1 to automatically stop and load, and then arrive at warehouse No. 2 for partial discharge and warehouse No. 3 for all unloading. After unloading, it will return to warehouse No. 1 to stop. The signal light flashes three times to indicate that the trolley can work cyclically or stop at any time. At the same time, the movement of the trolley and the range of loading and unloading can be remotely controlled by setting the touch screen parameters, so that the trolley can complete automatic work according to the corresponding data. The performance of the three sensors can be used to realize the recognition, detection and display functions of workpieces of different materials. <br>2. Use different methods to complete the design based on requirement 1. <br>Keywords: <br>S7-1200PLC; V20 inverter; MCGS touch screen; sensor; high-speed counter

Summary:<br>This design is an introduction to the application of loading troller sequence control, the design adopts the German Siemens programmable controller S7-1200 as the control body, according to the needs of the car in three specific locations of automatic loading, discharge control and corresponding work parts detection, and requires the combination of MCGS touch screen. The design requirements are as follows:<br>1. Regardless of the car in any position on the conveyor belt are first returned to warehouse 1 automatic stop and loading, and then in turn to warehouse 2 for partial discharge and warehouse 3 all discharge, discharge after the completion of the return to warehouse 1 stop, while the signal light flashes three times signal, the car can cycle back and forth work can also be stopped at any moment. At the same time, the DT movement and loading and unloading range can be controlled remotely by setting the touch screen parameters, so that the DT can complete the automatic work according to the corresponding data. The performance of the three sensors enables the identification detection and display of work items of different materials.<br>2. On the basis of requirement 1, different methods are used to complete the design.<br>Keywords: <br>S7-1200PLC; V20 drive; MCGS touch screen; Sensor; high-speed counter

Abstract:<br>This design is to introduce the application of the sequence control of the loading car. The PLC s7-1200 of Siemens company is used as the main control body. According to the requirements, the automatic loading and unloading control of the trolley at three specific positions and the corresponding workpiece detection are completed, and it is required to be combined with MCGS touch screen. The design requirements are as follows:<br>1. No matter where the trolley is at any position of the conveyor belt, it will return to No. 1 bin for automatic stop and loading, and then it will arrive at No. 2 bin for partial unloading and No. 3 bin for full unloading. After unloading, it will return to No. 1 bin and stop at the same time. At the same time, the signal light flashes for three times. The trolley can cycle back to work or stop at any time. At the same time, by setting the touch screen parameters, the trolley can remotely control the movement and loading and unloading range, so that the car can complete the automatic work according to the corresponding data. Using the performance of the three sensors, the recognition, detection and display functions of different materials can be realized.<br>2. On the basis of claim 1, different methods are used to complete the design.<br>key word:<br>S7-1200plc; V20 inverter; MCGS touch screen; sensor; high speed counter