Operation content: Establish communication between the touch screen and PLC to enable the touch screen to read and write PLC data Communication method: Touch screen communicates with PLC through DP Download line: USB/PPI Precautions for operation: Firstly, in STEP 7, perform hardware configuration (without attaching the HMI as a slave to the PROFIBUS bus, as the HMI is a secondary master), set the DP address and baud rate Then, set the connection parameters in the touch screen programming software (note that the connection parameters should be consistent with those in STEP 7) Finally, transfer the touch screen program to the touch screen via a download cable After successful transmission, it indicates that the program has been successfully downloaded to the touch screen  ...

Operation content: Establish communication between the touch screen and PLC to enable the touch screen to read and write PLC data Communication method: Touch screen communicates with PLC through DP Download line: USB/PPI Precautions for operation: Firstly, in STEP 7, perform hardware configuration (without attaching the HMI as a slave to the PROFIBUS bus, as the HMI is a secondary master), set the DP address and baud rate Then, set the connection parameters in the touch screen programming software (note that the connection parameters should be consistent with those in STEP 7) Finally, transfer the touch screen program to the touch screen via a download cable After successful transmission, it indicates that the program has been successfully downloaded to the touch screen  ...

Regarding the issue of not being able to read the value, if there is always no change in 32767, the value already exists, it is just an overrange. If the value is 0, then attention should be paid to whether there is a problem with the analog quantity. Using a multimeter to measure the on-site signal does not exceed the limit. Why do these two phenomena occur? This is because the selected reference potential is different. For example, if the signal coming from the site is 5V, the first thing to ask is what voltage is the reference point? 10-15 is 5V, and -10~-5 is also 5V. If the reference point of the measuring end is 0V, there will be a problem with the measurement, so it is necessary to ensure that both ends are equipotential. The reference potential point of the analog module is MANA, and all wiring is related to it. 02Isolation and Non Isolation Issues Series Th...

★: For faults that cannot be reset automatically, the cause of the fault must be cleared by turning it off and then on before resetting ▲: After the cause of the fault disappears, the fault can be reset using the automatic restart function. These faults can also be re powered on through the frequency converter or reset through logic input or control bits ●: A fault that can be reset as soon as the cause disappears. Serial number fault code fault name possible cause repair measures 1 ANF ★ Load Encoder speed feedback does not match the given value 1. Check the motor, gain, and stability parameters 2. Add a braking resistor 3. Check the size of the motor/frequency converter/load 4. Check the mechanical connection and wiring of the encoder 2 BRF ★ Mechanical brake failure The brake feedback contact is inconsistent with the brake logic 1. Check the feedback circuit a...

1. Bit operation instructions: Bit operation instructions are used to read, write, and modify bit level data. Common bit manipulation instructions include LD (logical AND), ORR (logical OR), AND (logical AND), XOR (XOR), etc. 2. Data operation instructions: Data operation instructions are used to read, write, and modify byte, word, and doubleword level data. Common data operation instructions include MOV (assignment), ADD (addition), SUB (subtraction), MUL (multiplication), DIV (division), etc. 3. Counter instruction: Counter instruction is used to implement counting function. There are three types of counter instructions: rising edge counter, falling edge counter, and stage counter. The counter instruction can be used for applications such as quantity statistics and progress monitoring. 4. Timer instruction: The timer instruction is used ...

Системные шины AHB разделены на APB1 (36 МГц) и APB2 (72 МГц), из которых 2 > 1 означает, что APB2 подключен к высокоскоростным устройствам 2.STM32f10x. h = reg52. h (с базовым определением битовой операции), другой - STM32f10x ref.h, который конкретно контролирует конфигурацию периферийных устройств, то есть роль файла заголовка коммутатора HSE Osc (Высокоскоростной внешний генератор) - это высокоскоростной внешний кристаллический генератор, который обычно работает на 8 МГц, в то время как HSI RC (Высокоскоро...

caseMotion control of hydraulic feed device: Left row illustration: Right row illustration: Control switch (conversion condition): Action requirements: Sequential functional diagram drawing: Ladder diagram drawing:

1、 Action analysis When a person approaches the automatic door, sensor X0 is turned on, and Y0 drives the motor to open the door at high speed. When it touches the door opening deceleration switch X1, it changes to low-speed opening. When the door opening limit switch X2 is touched, the motor stops running and starts to delay. If the sensor detects no one within 0.5 seconds, Y2 will start the motor and close the door at high speed. When encountering the door closing deceleration switch X4, switch to low-speed door closing, and when encountering the door closing limit switch X5, the motor stops running. If the sensor detects someone during the door closing period, the door will stop closing, and T1 will automatically switch to high-speed door opening after a delay of 0.5 seconds. 2、 Hardware Design Based on the previous learning and the markings in the diagram, student...