Difference Between Mitsubishi PLC and Siemens PLC:

These two are mainstream PLCs, one made in Japan, one made in Germany, I have used both, both are very representative, it is recommended to learn both, you can learn Mitsubishi's first, because most of the programming methods of other brands of PLC are imitation of Mitsubishi, especially domestic brands, just like the Delta I use now, and Xinjie, which is almost exactly the same as Mitsubishi. Mitsubishi is what a traditional ladder looks like. And Siemens is also unique, although he also said that it is a ladder diagram, but his is a modular ladder diagram, which looks more intuitive than Mitsubishi's, and the step7 software is also very easy to use.

The difference lies in the form of programming, but the central idea is the same meaning.

The main difference between Siemens PLC and Mitsubishi PLC is that Siemens has always advocated the use of structured programming, that is, the program of a device is composed of several subprograms, each subprogram is responsible for a function, and then called through the main program when needed, which has many benefits, such as finding faults, debugging, etc. are very convenient, and all of Mitsubishi's programs are in a main program (at least the FX series), if the program is longer, it is very troublesome to debug, and there is in terms of analog processing, Siemens is also more convenient than Mitsubishi's.

There is not much difference in hardware, mainly the difference in software, the difference in the use of instructions, and the difference in parameter setting.

Hope...

The main differences are:

The symbol representation is different, e.g. for Mitsubishi is X, X is Siemens for I

Functional directives are different, and Siemens is in the form of functional blocks.

Domestic Siemens PLC

and Siemens PLC, there are differences in use restrictions, confidentiality, and compatibility

1. The use restrictions are different.

The domestic Siemens PLC is usually followed by CN, which cannot be exported, and is only limited to domestic use. And the domestic Siemens PLC upper programming software must be set to Chinese status in order to communicate with the imported PLC.

2. Confidentiality is different.

Domestic Siemens PLC supports level 4 passwords, imported ones do not support, and domestic programs have stronger confidentiality.

3. **Different.

Domestic Siemens PLC, because it does not need EU certification, the value of labor costs is reduced, so it is also lower.

4. Compatibility is different.

The program copy cards of domestic Siemens PLC and Siemens PLC are not compatible with each other, and the programs cannot be used universally.

First, the manufacturers are different.

1. Panasonic PLC: Panasonic PLC is produced by Panasonic Company.

2. Mitsubishi PLC: Mitsubishi PLC is the main product produced by Mitsubishi Electric in Dalian.

Second, the instruction set structure is different.

1. Panasonic PLC: Panasonic PLC should pay attention to logical thinking when programming. Programming itself is a logical thinking process.

In high-level language, as in many premise discriminant statements, this is the causal relationship in logic. The PLC procedure is composed of these causal connections: to determine whether the premise is established, and then to determine the execution of the corresponding instructions.

2. Mitsubishi PLC: Mitsubishi PLC network inherits the traditional use of MelSEC network, Q series PLC provides a clear three-layer network, providing the most suitable network products for various purposes.

Third, the positioning is different.

1. Panasonic PLC: The pulse output function of 3 axes in C14 and 4 axes in C30 and C60 is built into the control unit body. In the past, PLCs had to use advanced models, dedicated units for bit control, or more than two multi-axis control devices, but FP-X transistor output products basically use only one unit unit, saving space and reducing costs.

2. Mitsubishi PLC: It has improved the scalability of the product and has a unique dual-bus expansion mode. Expandable connection of analog communication adapters (up to four) using the left bus for more efficient data transmission and simplified programming; The bus on the right side is compatible with legacy systems and can be connected to the FX series' traditional IO extensions and special function modules.

Dear, we are glad to answer for you: What is the coincidence of Siemens PLC and Mitsubishi PLC input and output substitution? A:

Dear, hello, the commonly used PLC input symbols are X and I, the input symbol represented by Mitsubishi PLC is represented by X, and the input symbol represented by Siemens PLC is represented by I. The X on the PLC represents the input terminal, and the Y represents the output terminal, such as the PLC of the Mitsubishi series, I represents the input terminal of the judgment terminal, and the Q represents the output terminal, such as the PLC of the Siemens series, AI stands for analog input, and AQ stands for analog output. The X on the PLC represents the input terminal, and the Y represents the output terminal, such as the PLC of the Mitsubishi series, the I represents the input terminal, and the Q represents the output terminal, such as the PLC of the Siemens series, AI stands for analog input, and AQ stands for analog output.

Learn PLC first learn Mitsubishi or Siemens is introduced as follows:

Learn PLC, Mitsubishi is easier to get started, because Mitsubishi is Japanese, programming is intuitive and easy to understand, the idea is simple, it will be easier to learn, but there are more instructions, it is recommended to learn Mitsubishi's FX series first. But from the perspective of learning and prospects, Siemens is better, if you want to learn Siemens, it is recommended to learn S7-200 first, although 200PLC has been discontinued, but it is relatively simple, after all, it is a Siemens product, there will not be much difference, first easy and then difficult, step by step is the truth.

PLC (Programmable Logic Controller) generally refers to a programmable logic controller (programmable control device).

A programmable logic controller is an electronic system designed for digital operations in industrial environments. It uses a programmable memory to store instructions for performing operations such as logic operations, sequence control, timing, counting, and arithmetic operations, and controls various types of mechanical equipment or production processes through digital or analog inputs and outputs.

Introduction: <>

Programmable logic controller (PLC), a digital computing controller with a microprocessor for automatic control, can load control instructions into memory at any time for storage and execution. The programmable controller is composed of CPU, instruction and data memory, input and output interfaces, power supply, digital and analog conversion and other functional units. The early programmable logic controller only had the function of logic control, so it was named the programmable logic controller.

Later, with the continuous development, these computer modules with simple functions have included logic control, timing control, analog control, multi-machine communication and other functions, and the name has also been changed to programmable controller (programmable controller), but because of its abbreviation PC and personal computer (personal computer) abbreviation conflict, coupled with the habitual reasons for cracking, people still often use the name programmable logic controller, The abbreviation PLC is still used.

The programmable logic controller used in industry has been equivalent to or close to the host of a compact computer, and its advantages in scalability and reliability make it widely used in various industrial control fields.

Whether it is in the computer direct control system, the centralized decentralized control system DCS, or the fieldbus control system FCS, there are always a large number of PLC controllers of all kinds. There are many PLC manufacturers, such as Siemens, Schneider, Mitsubishi, Delta, etc., and almost all manufacturers involved in the field of industrial automation will have their PLC products to provide.

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Advantages: Mitsubishi's advantage lies in discrete control and motion control, Mitsubishi's instructions are abundant, there are special positioning instructions, control servos and stepping are easy to implement, and it is also Mitsubishi's strength to achieve some complex motion control. Because it is manufactured from used circuit boards and parts that are beyond their useful life, the service life is very short.

Disadvantages: Manufactured using inferior materials or low-end production techniques, the functions or properties described in the product manual cannot be realized. Accidents such as poor operation, damage, and burning of Rongsheng equipment.

Because it has not undergone the necessary quality control and verification, it will lead to misoperation and loss of control of the machine.