plc program
Programmable controllers (Programmable Controller) should be referred to as PC, PC PC in order to distinguish, so referred to as programmable controller PLC (Programmable Logic Controller), but does not mean that PLC can control logic signal. Application and design of PLC is specifically designed for industrial environments, comes with an intuitive, simple and easy to … Continue reading PLC, the structure and principles of learning
1: according to actual needs, function block programming, writing subroutinesIn the PLC, subroutines are relatively independent of a specific control objective to develop the program. CALL subroutine call instruction is executed, if the subroutine call if the conditions are not met, the program scans only in the main program, and not to scan the routine, … Continue reading How to improve the speed of PLC program running
I personally think that the PLC will go through 5 stages. Read the content below, please ask yourself is which form!I. logical phasesCalled the logical phase is to implement the General logic of relay system design, since it is a relay system of electric drive knowledge is the basis for the stage. My personal summary … Continue reading Five stage of the learn PLC
1. Programming softwareSiemens SIMATIC PLC series offers a variety of programming software, mainly STEP MICRO/DOS and STEP MICRO/WIN;STEP mini standard package STEP7S7 PLC programming language is very rich, includes LAD, and STL, SCL, GRAPH, HIGRAPH, CFC etc. Users can select a language, if required, can also be mixed using several programming languages.2. Program structureProgram structure … Continue reading Siemens programmed software and program structure
Programmable logic controller consists of CPU, memory, I/O interface circuits, peripheral interface, programming devices, power supplies and other components.
After the PLC program debugging through can only to users, or try to run. Field debugging to debug outline prepared in advance. According to the outline, step by step in an orderly manner.When you start debugging, the device may not work, not even charged. Progress step by step power available with debug, boot, loading, running … Continue reading PLC program debugging
To write a PLC program can be carried out according to the following steps:1. Process analysisPLC control object work and control requirements are analyzed, to clarify the following questions:1) how to start the process? The goal is how to further implement?2) correspond to how input and output? On the timing and what are the characteristics?3) … Continue reading PLC Basic programming steps
There are three commonly used programming methods: empirical method, the analytical method and the graphical method1. Empirical methodThe so-called "experience" programming is the use of one's own or others ' experience. This method requires the user to be familiar with basic circuit conditions, grasp the basic principles of design of ladder diagram and programming skills … Continue reading The programming method of PLC
PLC ONE 