Siemens S7-200PLC is an ultra-compact PLC, which is suitable for automatic detection, monitoring and control in various industries and in various occasions. The powerful features of the S7-200PIE enable complex control functions to be implemented in either stand-alone or connected networks. 1 working principle The robot presses the start button when the workpiece is detected at the home position. Drop the solenoid valve to energize. The robot is lowered. When it falls to the end. Hit the lower limit switch. The falling solenoid valve is de-energized, and the lowering stops: the clamping solenoid valve is simultaneously turned on. The robot is clamped. After clamping. The rising solenoid valve is energized. The robot is rising. When it rises to the top, it hits the upper limit switch. The rising solenoid valve is de-energized. Rise and stop; simultaneously turn on the right shift solenoid valve. When the robot moves to the right, it touches the right limit switch, the right shift solenoid valve is powered off, and the right shift stops. If there is no workpiece on the right table at this time. Then the photoelectric switch is turned on. The drop solenoid valve is energized and the manipulator is lowered. When it falls to the end. When the lower limit switch is touched, the lower solenoid valve is energized. The descent stops. At the same time, the clamping solenoid valve is powered off and the manipulator is relaxed. After relaxation, the rising solenoid valve is energized and the robot is raised. When rising to the top. When you touch the left limit switch, the left shift solenoid valve is powered off. Move left to stop. At this point, the robot completes a cycle of motion through an 8-step motion. 2 input and output terminal assignment The programmable controller used in the robot control system of this paper is the robot control system of S7-200CPU214 produced by Siemens AG of Germany. A total of 14 inputs were used. 6 outputs. The terminal address assignment is shown in Table 1. 3 automatic operation program design The robot automatic operation process is shown in Figure 1. The drop solenoid valve is energized and the manipulator is lowered. When it falls to the end. When the lower limit switch is touched, the lower solenoid valve is energized. The descent stops. At the same time, the clamping solenoid valve is powered off and the manipulator is relaxed. After relaxation, the rising solenoid valve is energized and the robot is raised. When rising to the top. When you touch the left limit switch, the left shift solenoid valve is powered off. Move left to stop. At this point, the robot completes a cycle of motion through an 8-step motion. 4 Conclusion Programmable controller PLC with its rich I/O interface module and high reliability. Played a very important role in the design of the robot control system. But in the process of PLC control, there are still many problems to be solved. This paper presents some of its own views on several key issues in the design process. Proven by practice. Can effectively improve the system's anti-interference ability. For PLC read, write, event response and other communication time can be precisely controlled. got a good result. An EV cable, also known as an electric vehicle cable or charging cable, is a cable used to connect an electric vehicle to a charging station or power source. It is designed to safely transfer electrical power from the charging station to the vehicle's battery, allowing for the charging of the electric vehicle. New Energy Vehicle Shielded Automotive Cable,High Tear Resistant Silicone Rubber Cable,New Energy Vehicle Shielded Cable,EV Automotive Cable Ruitian Cable CO.,LTD. , https://www.hbruitiancable.com
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