By MELSECNET/B I/O can be decentralized control.
In a main PLC station this module can control up to 512 I/O points.
The popularization and application of PLC programming has been developed rapidly in our country,
It has been widely used in all kinds of mechanical equipment and production process of electrical control devices,
All walks of life have emerged a large number of application of PLC transformation of the results of the equipment A2CCPUC24-PRF PDF A2CCPUC24-PRF
Understand the working principle of PLC, have the ability to design, debug and maintain the PLC control system,
Has become the basic requirements of modern industry for electrical technicians and engineering students A2CCPUC24-PRF PDF.
The instruction list programming language is a programming language similar to assembly language mnemonic,
As well as assembly language by the operation code and the number of operations.
In the case of the computer for the PLC handheld programmer compile user program A2CCPUC24-PRF PDF.
At the same time, the programming language of the instruction list corresponds to the ladder diagram programming language,
In PLC programming software can be converted to each other. Figure 3 is the instruction sheet corresponding to the ladder diagram of figure 2PLC MITSUBISHI Programming Manual.
The characteristics of instruction table programming language is used to represent mnemonic operation function,
Easy to remember, easy to grasp;
In the handheld programmer on the keyboard using the mnemonic representation, easy to operate, can be programmed in computer;
There is a one-to-one correspondence between the ladder diagram and the ladder diagram MITSUBISHI Programming Manual. Its characteristics are basically consistent with the ladder diagram language. Up to controlled I/O points: 8 point I/O combination module, up to 128 points.
Use any I/O module, up to 64 points.
Flexible system configuration; each remote I/O component is controlled by the I/O point to remain sufficieently low,
So in the installation of control equipment where only the I/O point is not wasted MITSUBISHI Programming Manual A2CCPUC24-PRF Manual .
At the same time, it is not required to have the terminal resistance and the T - type branch to obtain the maximum flexibility.
Structured text language is a programming language that describes a program with a structured description of the text.
It is a programming language similar to a high level language. In large and medium
Structured text is often used to describe the relationship between the various variables in the control system based on the PLC system.
Mainly used for other programming languages more difficult to achieve the user program.
Functional block diagram language is a kind of PLC programming language, which is similar to digital logic circuit.
The function module is used to represent the function of the module,
Different function modules have different functions.
Functional module figure programming language features: functional block diagram programming language is characterized by a functional module for the unit,
Analysis and understanding of the control scheme iss simple and easy: function module is to use graphical form of expression,
Intuitive, for a digital logic circuit based on the design of the staff is very easy to master the programming;
Control system with complex scale and coomplex control logic,
Because the function module diagram can clearly express the function relation, the programming debugging time is greatly reduced A2CCPUC24-PRF Manual A2CCPUC24-PRF Programming Manual.