Ladder diagram programming: The advantages are image, intuition and practicality. It is well known to electrical technicians and is the main programming language of PLC. Instruction statement language: Similar to the mnemonic language in a computer, it is the most basic programming language for programmable controllers. The so-called instruction statement table programming is to use … Continue reading What kinds of programming languages are commonly used in PLC?
Tag: PLC programming
What kinds of configuration and characteristics of PLC
Programmable Logic Controller (PLC) is essentially a kind of computer dedicated to industrial control. Its hardware structure is basically the same as that of a micro-computer. (1) Power supply The power supply of programmable logic controller plays an important role in the whole system. Without a good and reliable power supply system, it is impossible … Continue reading What kinds of configuration and characteristics of PLC
What are the series of Siemens S7-300 series controllable programmers? What are the general working modes of this kind of PLC?
The S7-300 CPU operates in four ways, controlled by a removable dedicated key: (1) RUN-P: Programmable operation mode. (2) RUN: Operation mode. (3) STOP: downtime mode. (4) MRES: CPU Zero-out CPU classification 1. Compact CPU: CPU 312C, 313C, 313C-PtP, 313C-2DP, 314C-PtP 314C-2DP. Each CPU has counting, frequency measurement and pulse width modulation functions. Yes There … Continue reading What are the series of Siemens S7-300 series controllable programmers? What are the general working modes of this kind of PLC?
What are the functions and working methods of PLC programmers?
Programmer is an important peripheral equipment of PLC. User program is sent into the memory of PLC by programmer. Programmer can also be used to check the program, modify the program and monitor the working status of PLC. Common devices for programming PLC include hand-held programmer and computer programming. In the early development of programmable … Continue reading What are the functions and working methods of PLC programmers?
What is the execution order of the PLC program?
PLC program execution order(1) The ladder diagram should be programmed with the left bus as the starting point and the right bus as the end point, from left to right, written line by line.The beginning of each line is the starting condition, consisting of normally open, normally closed contacts or a combination thereof. The rightmost … Continue reading What is the execution order of the PLC program?
To simplify and write PLC ladder command statement table ladder program
After simplifying the ladderInstruction Statement Lista） LD 01600AND 00002LD-NOT 00001OR-LDAND 00000OUT 10000b）LD-NOT 00004AND 00005LD 10000AND 00006OR-LDAND 00003LD 00002AND 00004OR-LDAND 00001OUT 10000c）LD 10000AND 00003AND 00004OR 00001AND 00000LD 10000AND 00001LD 00003AND 00004OR-LDAND 00002OR-LDOUT 10000
Art lantern shape PLC Ladder programming and wiring experiment
This article describes an artistic lantern shape PLC ladder programming and wiring experiment described, as follows:1. Project the necessary equipment, tools, materialsPLC: FX2N-32MR 2, the training content:1, project descriptionThe shape of an art lantern demonstration board as shown in Figure 6, A, B, C, D, E, F, G, H for the eight lights, a ring … Continue reading Art lantern shape PLC Ladder programming and wiring experiment
Application and characteristics of PLC in control system
What is the meaning of the programmable controller:Acronym PLC programmable controller or PC, is evolved from the early relay logic control system, which constantly absorbing function of the microcomputer technology to growing gradually for complex control tasks. Since 1836 relay came, people began to use it skillfully wire connected with the switching device, constitute use … Continue reading Application and characteristics of PLC in control system
PLC ladder programming rules
Although the ladder and relay circuit is similar in structure, elements, symbols and logic control functions and other aspects of phase, but they have many differences, the ladder program has its own rules.1) Each logical line is always to the left from the bus, and then the contact is connected, the final termination of the … Continue reading PLC ladder programming rules
PLC ladder programming principles and programming methods
(1) Input / output relay, internal auxiliary relays, timers, counters and other devices of the contact can be used repeatedly, without complex program structure to reduce the use of contacts. (2) Each line ladder left the bus started, the coil terminates at the right bus. Contacts are not on the right side of the coil, … Continue reading PLC ladder programming principles and programming methods
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