Intelligent preparation device based on PLC control
阅读说明：本技术 一种基于plc控制的智能制备装置 (Intelligent preparation device based on PLC control ) 是由 马翠娟 于 2019-09-22 设计创作，主要内容包括：本发明一种羽绒的制备设备,所述制备设备包括PLC、控制面板、四个微特电机、四个传感器、步进电机、驱动器、重量检测；其中微特电机与传感器相连接,传感器与重量检测相连接,步进电机与驱动器相连接,控制面板与输入接口相连接,重量检测与输入接口相连接,驱动器与输出接口相连接,微特电机与输出接口相连接,PLC与控制面板、微特电机、驱动器、重量检测相连接。本发明通过电机调速电路通过设有的滑动变阻器R13可以改变电压负反馈量的大小,调节滑动变阻器R12可以改变电动机M转动的速率,通过微特电机和步进电机协调运动,完成填料,本发明的生产效率高,节能减排效果显著。(The invention relates to down feather preparation equipment which comprises a PLC (programmable logic controller), a control panel, four micro-special motors, four sensors, a stepping motor, a driver and a weight detector, wherein the PLC is used for detecting the weight of down feather; the micro special motor is connected with the sensor, the sensor is connected with the weight detection, the stepping motor is connected with the driver, the control panel is connected with the input interface, the weight detection is connected with the input interface, the driver is connected with the output interface, the micro special motor is connected with the output interface, and the PLC is connected with the control panel, the micro special motor, the driver and the weight detection. The motor speed regulating circuit can change the magnitude of voltage negative feedback quantity through the slide rheostat R13 arranged, the slide rheostat R12 can be adjusted to change the rotation speed of the motor M, and the filling is completed through the coordinated motion of the micro special motor and the stepping motor.)
1. The utility model provides a based on PLC control fine hair intelligence preparation facilities which characterized in that: the preparation equipment comprises a PLC, a control panel, four micro-special motors, four sensors, a stepping motor, a driver and weight detection; the micro special motor is connected with the sensor, the sensor is connected with the weight detection, the stepping motor is connected with the driver, the control panel is connected with the input interface, the weight detection is connected with the input interface, the driver is connected with the output interface, the micro special motor is connected with the output interface, and the PLC is connected with the control panel, the micro special motor, the driver and the weight detection.
2. The intelligent preparation device based on PLC control fine hair of claim 1, characterized in that: wherein the micro special motor 1 is connected with the sensor 1, the micro special motor 2 is connected with the sensor 2, the micro special motor 3 is connected with the sensor 3, the micro special motor 4 is coordinated with the sensor 4, the micro special motor and the stepping motor to complete the filling.
3. The PLC-based intelligent preparation device of control lint is characterized in that the control panel comprises a motor speed regulation circuit, the motor speed regulation circuit comprises a rectifier bridge D1 ~ D3, a relay KA1 ~ KA3, a fuse F1 ~ F4, a silicon controlled rectifier D9, a switch S1 ~ S6, a triode Q1, a Q2, a double-base diode Q3, a diode D4 ~ D8, a resistor R1 ~ R9, a slide rheostat R10 ~ R13, a transformer T1, a transformer T2, a reactor L1, an inductor L2 ~ L3, a motor M, multimeters XMM1 and XMM2, a capacitor C1 ~ C5, a button SB1, an SB2, an alternating current contactor KI and a voltage stabilizing diode D10.
4. The intelligent preparation device based on PLC control fine hair of claim 3, characterized in that: the motor speed regulating circuit can change the magnitude of voltage negative feedback quantity through the slide rheostat R13 arranged, and the speed of the motor M rotation can be changed by adjusting the slide rheostat R12.
5. The intelligent preparation device based on PLC control fine hair of claim 3, characterized in that: one end of the fuse F1 is connected to a switch S1, one end of the switch S1 is connected to one end of a transformer T1, the transformer T1 is further connected to one end of an external power source, the other side of the fuse F1 is connected to the top end and the bottom end of a rectifier bridge D2 respectively, the rectifier bridge D2 is connected to a switch S4, the switch S4 is connected to a relay KA3, the other end of the relay KA3 is connected to a resistor R2, the resistor R2 is connected to the cathode of a zener diode D2, the anode of the zener diode D2 is connected to the switch S2, the two ends of the zener diode D2 are further connected to the two ends of a sliding rheostat R2, the left side of the rectifier bridge D2 is connected to the anode of the diode D2 and the transformer T2, the two ends of one side of the transformer T2 are connected to a capacitor C2 and a second base of a double-base diode Q2 respectively, a first base of the diode Q3 is connected to a resistor R8, an emitter of the diode Q3 is connected to a collector of a transistor Q1 and the other end of a capacitor C2, an emitter of the transistor Q1 is connected to a resistor R7, the other end of the resistor R7 is connected to a resistor R8, a base of the transistor Q1 is connected to a collector of a transistor Q2, an emitter of the transistor Q2 is connected to a resistor R3, a base of the transistor Q3 is connected to an anode of a diode D3, a cathode of the diode D3 is connected to an anode of the diode D3, a cathode of the diode D3 is connected to a cathode of the diode D3, a cathode of the diode D3 is connected to an anode of the diode D3, two ends of the diode D3 are connected to a capacitor C3, the other end of the capacitor C3 is connected to a resistor R3, and the other end of the resistor R3 is connected to a slider 3, the slide bar of the slide rheostat R11 is connected with one end of the slide rheostat R11.
6. The intelligent preparation device based on PLC control fine hair of claim 3, characterized in that: the other end of the fuse F1 is connected with one end of an external power supply, one end of the external power supply is further connected with a fuse F2, the other end of the external power supply is further connected with a switch S5 and a transformer T1, one end of the fuse F2 is connected with the bottom ends of a switch S3, a fuse F4 and a rectifier bridge D3, a capacitor C3 and a resistor R1 are sequentially installed between the switch S5 and the switch S3 from top to bottom, the resistor R1 is connected with the bottom end of the rectifier bridge D1, the left end of the rectifier bridge D1 is connected with the anode of a silicon controlled rectifier D1, a capacitor C1 is connected between the control electrode and the cathode of the silicon controlled rectifier D1, the capacitor C1 is connected with the fuse F1, the cathode of the diode D1 is further connected with the cathode of the capacitor C1, the right end of the rectifier bridge D1 is connected with the right end of the fuse F1, the fuse F1 is further connected with the anode of the rectifier bridge D1, the negative electrode of the diode D8 is further connected with a relay KA1, the relay KA1 is connected with a resistor R9, the resistor R9 is connected with a slide rheostat R13, the positive electrode of the D8 is connected with the other end of the slide rheostat R13, a slide rod of the slide rheostat R13 is connected with a slide rod of a slide rheostat R11, the resistor R9 is further connected with a reactor L1, the other end of the reactor L1 is connected with an inductor L2, the inductor L2 is connected with a motor M, and a universal meter XMM2 is connected between the motor M and one end of the slide rheostat R13.
7. The intelligent preparation device based on PLC control fine hair of claim 3, characterized in that: be connected with electric capacity C5 between rectifier bridge D3 ' S left end and right-hand member, electric capacity C5 ' S one end is connected with inductance L3, inductance L3 ' S one end is connected with slide rheostat R10, slide rheostat R10 ' S one end and slide rheostat R10 ' S slide bar all link to each other with rectifier bridge D3 ' S right-hand member, fuse F4 ' S one side is connected with switch S2, switch S2 ' S one end still is connected with button SB1 and switch S6, the one end of button SB1 is connected with button SB2, the other end of button SB2 is connected with switch S6 and AC contactor KI, AC contactor KI still is connected with relay KA2, relay KA2 links to each other with rectifier bridge D3 ' S top.
8. The intelligent preparation device based on PLC control fine hair of claim 1, characterized in that: the automatic control system has two working modes of manual control and automatic control, wherein the automatic working mode is that the whole system runs according to a set program cycle after the equipment starts to run; the manual control working mode is to switch the range gear for feeding in a manual button mode.
9. The intelligent preparation device based on PLC control fine hair of claim 1, characterized in that: FX2N-16MT type PLC is selected as the PLC.
Technical Field
The invention belongs to the field of intelligent preparation, and particularly relates to an intelligent preparation device based on PLC control.
Background
China has abundant feather resources, the yield of the feathers accounts for about 6.6-7.6% of living bodies of ducks and geese, and if the feathers all over the country can be completely processed and utilized, the feather feed can increase a great income for poultry industry. The finished down feather after washing is one of the traditional main exported animal products and is a pretty raw material in the down feather product industry in China. The down separation aims to separate down and feather pieces from raw material feathers and carry out grading filing so as to meet the requirements of various fillers in the processing of products with different specifications in the clothing and bedding industries. The filling material has the defect of high energy consumption, and is characterized in that the intelligent level of the filling material is low, and in order to further save energy, an optimized control system scheme needs to be designed, so that the filling material is beneficial to energy conservation and emission reduction.
Disclosure of Invention
In order to solve the problems, the invention provides an intelligent preparation device based on PLC control, so that the quality of the prepared down feather is greatly improved, and better energy conservation and emission reduction can be realized.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention provides an intelligent preparation device based on PLC control, which comprises a PLC, a control panel, four micro special motors, four sensors, a stepping motor, a driver and a weight detector, wherein the micro special motors are connected with the sensors, the sensors are connected with the weight detector, the stepping motor is connected with the driver, the control panel is connected with an input interface, the weight detector is connected with the input interface, the driver is connected with an output interface, the micro special motors are connected with the output interface, and the PLC is connected with the control panel, the micro special motors, the driver and the weight detector.
Further, a micro
Further, the control panel comprises a motor speed regulating circuit, and the motor speed regulating circuit comprises a rectifier bridge D1 ~ D3, a relay KA1 ~ KA3, a fuse F1 ~ F4, a silicon controlled rectifier D9, a switch S1 ~ S6, triodes Q1 and Q2, a double-base diode Q3, a diode D4 ~ D8, a resistor R1 ~ R9, a slide rheostat R10 ~ R13, a transformer T1, a transformer T2, a reactor L1, an inductor L2 ~ L3, a motor M, multimeters XMM1 and XMM2, a capacitor C1 ~ C5, a button SB1, an SB2, an alternating current contactor KI and a voltage stabilizing diode D10.
Furthermore, the motor speed regulating circuit can change the magnitude of the voltage negative feedback quantity through the slide rheostat R13, and the speed of the rotation of the motor M can be changed by adjusting the slide rheostat R12.
Further, one end of the fuse F1 is connected to a switch S1, one end of the switch S1 is connected to one end of a transformer T1, the transformer T1 is further connected to one end of an external power source, the other side of the fuse F1 is connected to the top end and the bottom end of a rectifier bridge D2, the rectifier bridge D2 is connected to a switch S4, the switch S4 is connected to a relay KA3, the other end of the relay KA3 is connected to a resistor R2, the resistor R2 is connected to the cathode of a zener diode D2, the anode of the zener diode D2 is connected to the switch S2, the two ends of the zener diode D2 are further connected to the two ends of a sliding rheostat R2, the left side of the rectifier bridge D2 is connected to the anode of the diode D2 and the transformer T2, the diode D2 is connected between the one side of the transformer T2, and the other side of the base Q2 of the capacitor C2 and the second end of the diode, a first base of the diode Q3 is connected to a resistor R8, an emitter of the diode Q3 is connected to a collector of a transistor Q1 and the other end of a capacitor C2, an emitter of the transistor Q1 is connected to a resistor R7, the other end of the resistor R7 is connected to a resistor R8, a base of the transistor Q1 is connected to a collector of a transistor Q2, an emitter of the transistor Q2 is connected to a resistor R3, a base of the transistor Q3 is connected to an anode of a diode D3, a cathode of the diode D3 is connected to an anode of the diode D3, a cathode of the diode D3 is connected to a cathode of the diode D3, a cathode of the diode D3 is connected to an anode of the diode D3, two ends of the diode D3 are connected to a capacitor C3, the other end of the capacitor C3 is connected to a resistor R3, and the other end of the resistor R3 is connected to a
Further, the other end of the fuse F1 is connected to one end of an external power supply, one end of the external power supply is further connected to a fuse F2, the other end of the external power supply is further connected to a switch S5 and a transformer T1, one end of the fuse F2 is connected to the bottom ends of a switch S3, a fuse F4 and a rectifier bridge D3, a capacitor C3 and a resistor R1 are sequentially installed between the switch S5 and the switch S3 from top to bottom, the resistor R1 is connected to the bottom end of a rectifier bridge D1, the left end of the rectifier bridge D1 is connected to the anode of a silicon controlled rectifier D9, a capacitor C4 is connected between the control electrode and the cathode of the silicon controlled rectifier D9, the capacitor C4 is connected to the fuse F4, the capacitor C4 is further connected to the cathode of a diode D4, the fuse F4 is further connected to the cathode of the fuse
Further, be connected with electric capacity C5 between rectifier bridge D3 ' S left end and right-hand member, electric capacity C5 ' S one end is connected with inductance L3, inductance L3 ' S one end is connected with slide rheostat R10, slide rheostat R10 ' S one end and slide rheostat R10 ' S slide bar all link to each other with rectifier bridge D3 ' S right-hand member, fuse F4 ' S one side is connected with switch S2, switch S2 ' S one end still is connected with button SB1 and switch S6, the one end of button SB1 is connected with button SB2, the other end of button SB2 is connected with switch S6 and AC contactor KI, AC contactor KI still is connected with relay KA2, relay KA2 links to each other with rectifier bridge D3 ' S top.
An intelligent preparation device based on PLC control has two working modes of manual control and automatic control, wherein the automatic working mode is that the whole system runs according to a set program period after equipment starts to run; the manual control working mode is to switch the range gear for feeding in a manual button mode.
The PLC is a control core, the problems of data processing and automatic control are solved in a centralized manner, when the system runs, the micro-special motor drives the electric brush to rotate, and signals of the receiving sensor are transmitted to the PLC through the interface.
A PLC is an electronic device designed specifically for digital arithmetic operations for use in an industrial environment. It uses programmable memory to store the instructions for executing logical operation, sequential operation, timing, counting and arithmetic operation, and can control various types of machinery or production process by digital or analog input and output.
The I/O points of the control object in the system are as follows: an indicator light: outputting 1; a stepping motor: 2 are output; a micro special motor: 4 electromagnetic coils are output; a weighing sensor: 4 analog quantity inputs are provided; control buttons: the switch inputs 8.
Interface circuit of PLC and stepping motor driver stepping motor must have special driver control stepping pulse and subdivision drive in operation, and the power drive function of motor is accomplished by its driver. The higher the stepping pulse frequency is, the faster the stepping motor rotates; the forward rotation and the reverse rotation of the stepping motor can be controlled by changing the electrifying sequence. The stepping motor can be controlled in angle or speed according to specific instructions. The angle control actually controls the pulse number and the steering, and controls the angular displacement by controlling the pulse number, thereby achieving the purpose of accurate positioning; the rotation speed control actually controls the frequency and the steering, and controls the rotating speed and the acceleration of the motor by controlling the pulse frequency, thereby achieving the purpose of speed regulation.
Regarding the type selection of the micro special motor, a driving motor in the automatic down feather filling equipment drives an electric brush to rotate, and the down feather is swept into a bin by the rotation of the electric brush. Because the amount of the added down feather is small every time and the requirement on the precision of the addition amount is high, the rotating speed of the electric brush cannot be too high; the processing material of the electric brush is polypropylene with low density, so the output power of a motor for driving the electric brush is low.
Regarding the selection of the sensor, the sensor is a device or a meter which realizes signal detection according to a certain rule and converts a measured quantity into another physical quantity. The device can convert non-electricity into electricity and also can realize mutual conversion between electricity and non-electricity. Sensors are essential key parts of automatic control systems. All automatic instruments and devices can realize information conversion, processing and display only by information detection, and then achieve the purposes of adjustment and control. Apart from the sensors, the automated meters and devices are unable to perform their functions.
Further, FX2N-16MT type PLC of Mitsubishi company of Japan, which is a transistor source type output and can supply alternating current and 24V direct current, is selected. Its I/0 point number is 16, the input point is 8, the output point is 8. Two FX2N-2AD digital-to-analog conversion modules are expanded, a 4-point analog input channel is added, and the controller can meet the control requirement on the system for adding the down feather.
In the flow chart of the system control program, after the equipment starts to run, the PLC starts to scan the initialization program and jumps to the corresponding comparison program block part to compare the received digital quantity with the digital quantity in the initialization scanning register, if the digital quantity is equal to the digital quantity in the initialization scanning register, the PLC starts to output a command for controlling the motor, otherwise, the PLC continues to the next scanning period, and after the end button is pressed, the equipment stops running.
The down feather feeding task is completed by controlling four extra-small motors and one stepping motor to move coordinately through the control system. The core controller of the control system enables the micro special motor and the stepping motor to move in a coordinated mode to finish the filling action. According to the coordination movement condition of four micro special motors and one stepping motor, a motor speed regulating circuit is redesigned, the motor speed regulating circuit can change the magnitude of voltage negative feedback quantity through the arranged slide rheostat R13, and the rotation speed of the motor M can be changed by adjusting the slide rheostat R12. The system has two working modes of manual control and automatic control, wherein the automatic working mode is that the whole system runs according to a set program cycle after the equipment starts to run; the manual control working mode is to switch the range gear for feeding in a manual button mode. The invention has high production efficiency and obvious energy-saving and emission-reducing effects.
Drawings
Fig. 1 is a diagram of a control system of the present invention.
Fig. 2 is a flow chart of the control system architecture of the present invention.
Fig. 3 is a working principle diagram of the automatic down feather filling equipment of the invention.
Fig. 4 is a circuit structure diagram of the motor speed regulating circuit of the present invention.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
As shown in fig. 1-3, the intelligent preparation device based on PLC control of the present invention comprises a PLC, a control panel, four micro-motors, four sensors, a stepping motor, a driver, and a weight detector; the micro special motor is connected with the sensor, the sensor is connected with the weight detection, the stepping motor is connected with the driver, the control panel is connected with the input interface, the weight detection is connected with the input interface, the driver is connected with the output interface, the micro special motor is connected with the output interface, and the PLC is connected with the control panel, the micro special motor, the driver and the weight detection.
Further, a micro
Further, the control panel comprises a motor speed regulating circuit, and the motor speed regulating circuit comprises a rectifier bridge D1 ~ D3, a relay KA1 ~ KA3, a fuse F1 ~ F4, a silicon controlled rectifier D9, a switch S1 ~ S6, triodes Q1 and Q2, a double-base diode Q3, a diode D4 ~ D8, a resistor R1 ~ R9, a slide rheostat R10 ~ R13, a transformer T1, a transformer T2, a reactor L1, an inductor L2 ~ L3, a motor M, multimeters XMM1 and XMM2, a capacitor C1 ~ C5, a button SB1, an SB2, an alternating current contactor KI and a voltage stabilizing diode D10.
Furthermore, the motor speed regulating circuit can change the magnitude of the voltage negative feedback quantity through the slide rheostat R13, and the speed of the rotation of the motor M can be changed by adjusting the slide rheostat R12.
Further, one end of the fuse F1 is connected to a switch S1, one end of the switch S1 is connected to one end of a transformer T1, the transformer T1 is further connected to one end of an external power source, the other side of the fuse F1 is connected to the top end and the bottom end of a rectifier bridge D2, the rectifier bridge D2 is connected to a switch S4, the switch S4 is connected to a relay KA3, the other end of the relay KA3 is connected to a resistor R2, the resistor R2 is connected to the cathode of a zener diode D2, the anode of the zener diode D2 is connected to the switch S2, the two ends of the zener diode D2 are further connected to the two ends of a sliding rheostat R2, the left side of the rectifier bridge D2 is connected to the anode of the diode D2 and the transformer T2, the diode D2 is connected between the one side of the transformer T2, and the other side of the base Q2 of the capacitor C2 and the second end of the diode, a first base of the diode Q3 is connected to a resistor R8, an emitter of the diode Q3 is connected to a collector of a transistor Q1 and the other end of a capacitor C2, an emitter of the transistor Q1 is connected to a resistor R7, the other end of the resistor R7 is connected to a resistor R8, a base of the transistor Q1 is connected to a collector of a transistor Q2, an emitter of the transistor Q2 is connected to a resistor R3, a base of the transistor Q3 is connected to an anode of a diode D3, a cathode of the diode D3 is connected to an anode of the diode D3, a cathode of the diode D3 is connected to a cathode of the diode D3, a cathode of the diode D3 is connected to an anode of the diode D3, two ends of the diode D3 are connected to a capacitor C3, the other end of the capacitor C3 is connected to a resistor R3, and the other end of the resistor R3 is connected to a
Further, the other end of the fuse F1 is connected to one end of an external power supply, one end of the external power supply is further connected to a fuse F2, the other end of the external power supply is further connected to a switch S5 and a transformer T1, one end of the fuse F2 is connected to the bottom ends of a switch S3, a fuse F4 and a rectifier bridge D3, a capacitor C3 and a resistor R1 are sequentially installed between the switch S5 and the switch S3 from top to bottom, the resistor R1 is connected to the bottom end of a rectifier bridge D1, the left end of the rectifier bridge D1 is connected to the anode of a silicon controlled rectifier D9, a capacitor C4 is connected between the control electrode and the cathode of the silicon controlled rectifier D9, the capacitor C4 is connected to the fuse F4, the capacitor C4 is further connected to the cathode of a diode D4, the fuse F4 is further connected to the cathode of the fuse
Further, be connected with electric capacity C5 between rectifier bridge D3 ' S left end and right-hand member, electric capacity C5 ' S one end is connected with inductance L3, inductance L3 ' S one end is connected with slide rheostat R10, slide rheostat R10 ' S one end and slide rheostat R10 ' S slide bar all link to each other with rectifier bridge D3 ' S right-hand member, fuse F4 ' S one side is connected with switch S2, switch S2 ' S one end still is connected with button SB1 and switch S6, the one end of button SB1 is connected with button SB2, the other end of button SB2 is connected with switch S6 and AC contactor KI, AC contactor KI still is connected with relay KA2, relay KA2 links to each other with rectifier bridge D3 ' S top.
Further, the external power supply is 220V alternating current.
Further, the double-base diode is BT 33.
Furthermore, the resistors R1 ~ R9 are all 1/2W metal film resistors.
Furthermore, the system has two working modes of manual control and automatic control, wherein the automatic working mode is that the whole system runs according to a set program cycle after the equipment starts to run; the manual control working mode is to switch the range gear for feeding in a manual button mode.
Furthermore, the PLC is a control core, the problems of data processing and automatic control are solved in a centralized mode, when the system runs, the micro-special motor drives the electric brush to rotate, and signals of the receiving sensor are transmitted to the PLC through the interface.
Further, FX2N-16MT type PLC of Mitsubishi company of Japan, which is a transistor source type output and can supply alternating current and 24V direct current, is selected. Its I/0 point number is 16, the input point is 8, the output point is 8. Two FX2N-2AD digital-to-analog conversion modules are expanded, a 4-point analog input channel is added, and the controller can meet the control requirement on the system for adding the down feather.
FX2N series PLCs have the following functions: logic control of switching value, analog quantity control, motion control, process control, data processing, communication and networking.
The logic control of the switching value replaces the traditional relay circuit to realize logic control and sequential control, and can be used for the control of single equipment and also can be used for multi-machine group control and an automatic assembly line.
Analog quantity control, in the industrial production process, a plurality of continuously changing quantities, such as temperature, pressure, flow, liquid level, speed and the like, are analog quantities. In order for the programmable controller to process Analog quantities, a/D conversion and D/a conversion between Analog quantities (Analog) and Digital quantities (Digital) must be achieved. PLC manufacturers all produce matched A/D and D/A conversion modules, so that the programmable logic controllers are used for analog quantity control.
And motion control, the PLC can be used for controlling circular motion or linear motion. Dedicated motion control modules are now commonly used. Such as a single or multi-axis position control module that can drive a stepper motor or a servo motor.
Process control, which refers to closed-loop control of analog quantities such as temperature, pressure, flow, etc. The PLC can program various control algorithm programs to complete closed-loop control. PID regulation is a regulation method used more in general closed-loop control systems.
The modern PLC has the functions of mathematical operation (including matrix operation, function operation and logic operation), data transmission, data conversion, sorting, table look-up, bit operation and the like, and can complete the acquisition, analysis and processing of data. These data can be compared with reference values stored in a memory to perform certain control operations, or can be transmitted to other intelligent devices by using a communication function.
And communication and networking are carried out, and the PLC communication comprises communication among the PLCs and communication between the PLCs and other intelligent equipment. The newly produced PLC is provided with a communication interface, so that the communication is very convenient.
Fig. 2 is a flow chart of a program in a system control program, in which after the device starts to operate, the PLC starts to scan the initialization program and jumps to a corresponding comparison block portion, compares the received digital quantity with the digital quantity in the initialization scan register, and starts to output a command for controlling the motor if the digital quantity is equal to the digital quantity in the initialization scan register, or continues to the next scan cycle, and stops operating the device after pressing an end button.
Furthermore, a PC is used as an upper computer, and a VB or VC is used for manufacturing a control interface, so that the operation and the monitoring of the PLC are realized.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.