Introduction to Mitsubishi PLC directives such as negation, air operation and END
The INV (Inverse) command is represented by a short 45° slash at the top of the ladder diagram, which negates the result of the operation before the execution of the instruction, and changes it to 1 if the result is 0, and 0 if the result is 1. In the contemptible diagram, if X0 and X1 are ON together, then Y0 is OFF; Otherwise, Y0 is ON. The INV command can also be used for LDP, LDF, ANDP and other pulse contact commands.
When entering INV commands with a handheld programmer, press the NOP button first, and then press the P/I button.
NOP (Non processing) is a no-operation command, which makes the step no-operation. After the operation of clearing the user's memory is performed, all the contents of the user's memory are changed to null operation commands.
END (End) is the completion command, which will force the completion of the scanning process at that time. If the END command is not written, it will be fulfilled from one step to the next step in the user's program memory; By placing the END command at the end of the program and only performing the procedure between the steps to the END, the END command can shorten the scanning cycle.
When debugging the program, the END instruction can be inserted after each segment of the program, and the segment debugging starts from the segment, and it is necessary to delete the END instruction in the middle of the program after debugging, which is also very useful for the error checking of the program. |
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Mitsubishi PLC's communication inspection method
When you are ready to communicate through AJ71QE71, perform a ping in MS-DOS format to check if the connection is correct before the Mitsubishi PLC's GPPW starts to communicate. The support communicates with the Weilun touch screen through the serial port.
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What is the difference between the Mitsubishi PLC FX3U and FX5U
1. The speed of the system bus is different. Although the FX5U series is small but precise, compared with the previous product FX3U, the system bus speed is greatly increased by 150 times, and the maximum expansion module can be expanded by 16 intelligent expansion modules, built-in 2-in and 1-out analog functions, built-in Ethernet interface and 4-axis 200kHz high-speed positioning function.
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PLC controller and human-machine interface anti-interference countermeasures - Mitsubishi
When carrying out anti-disturbance planning for specific projects, it is necessary to select products with high anti-disturbance ability, and adopt methods such as pressing the disturbance source, cutting off or attenuating the propagation path of electromagnetic disturbance, and using software means to improve the anti-disturbance ability of equipment and systems.
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Mitsubishi inverter control mode
According to the classification of the main circuit operation mode, it can be divided into voltage-type inverter and current-type inverter; According to the classification of switching methods, it can be divided into PAM control inverter, PWM control inverter and high carrier frequency PWM control inverter;
According to the classification of operating principles, it can be divided into V/f control frequency conversion ...
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Mitsubishi Q Series PLC and GX Works2 connection method
01 USB connection
USB connection requires a device USB driver, generally after installing GX Works2 software, it will automatically install the driver, but a single time due to antivirus software or system reasons, may not be installed, then we need to manually drive the device to the accounting machine. The specific device method we ...
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Mitsubishi servo motor is now commonly used
Torque control: Torque control is based on external simulation imitation typing or direct address assignment to set the output torque of the motor shaft. For example, 10V matches 5Nm. When the external simulation simulation is set to 5V, the output of the motor shaft is 2.5Nm. If the load of the motor shaft is less than 2.5Nm, then when ...
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Mitsubishi PLC's method of controlling the inverter
1. Mitsubishi PLC's analog signal control inverter
Hardware: FX1N, FX2N PLC hosts, equipped with 1 simple FX1N-1DA-BD extended analog output board; or analog input-output hybrid module FX0N-3A; or FX2N-2DA with two outputs; or four outputs ...
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Mitsubishi FR-E540 inverter parameter settings
1. Press the mode button continuously until you enter the parameter writing state, and the LED display is: Pr.O
2. Press the upper button to adjust the parameter to the Pr.34O parameter.
3. Press SET, the LED displays the initial value of Pr.340, press ...
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Mitsubishi PLC network structure
1. The equipment layer/fieldbus CC-Link equipment layer is a field network that connects PLC and other control equipment, sensors and drive equipment, which is the lowest layer of the entire network system. CC-Link fieldbus connection is selected, the number of wiring is greatly reduced, and the maintainability of the system is improved. Combine...
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Mitsubishi PLC controls the control method of the inverter
1. Use the switching signal of PLC to control the inverter
The output point and COM point of the PLC (MR type or MT type) are directly connected to the STF (forward engine), RH (high speed), RM (medium speed), RL (low speed), and SG input ports of the inverter. The PLC can control the inverter through the program.
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Advantages and applications of servo motors - Mitsubishi
First of all, what are the advantages of servo motors compared with other motors (such as stepper motors):
1. Accuracy: Closed-loop control of azimuth, speed and torque is realized; Overcome the problem of stepper motor out-of-step;
2. Speed: high speed ...
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Mitsubishi PLC communication detection steps
When you are ready to communicate through AJ71QE71, perform the ping procedure in MS-DOS mode to check if the connection is correct before the Mitsubishi PLC's GPPW starts to communicate. Support communication with Weilun touch screen through serial port.
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Replacement steps for the internal battery of Mitsubishi PLC
When the battery voltage drops, the power supply is "ON", and the "BATT. V" LED lights up, and the battery is valid for one month from the time the light is on. However, there are times when it is found late, so after finding that the indicator light is on, the battery should be replaced as soon as possible to avoid power failure.
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Mitsubishi PLC writes the holding circuit
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The work of the directive ...
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Installation and maintenance of Mitsubishi inverters
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Mitsubishi FX5U series PLC ten advantages
1. CPU function
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Mitsubishi PLC hardware installation method
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Ground leakage current of Mitsubishi inverter and countermeasures thereof
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Mitsubishi PLC control inverter method
1. Mitsubishi PLC's analog signal control inverter
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