How to modify the value of register

How to modify the value of register Jenasiplc is a new generation of programmable controller developed by Loudi jiansi Industrial Control Co., Ltd. It is different from the traditional PLC ladder diagram programming method based on relay circuit. Jenasiplc is based on the control process and uses Chinese computer instructions for programming. It has the […]

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How to connect PLC with computer and how to upload and download program

1、 Hardware connection between PLC and computer There are two kinds of common cables, one is fx-232awch (SC09) cable, which contains RS232C / RS422 converter; Another kind of fx-usb-aw (also known as usb-sc9-fx) cable, as shown in the figure, contains USB / RS232 converter. When selecting PLC programming cable, first check whether the computer has […]

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Have you ever made such a low-level mistake in programming PLC?

When programming PLC, both novice and veteran will make such low-level mistakes. Because this kind of error is non grammatical, it can not be detected by programming software. Once this error occurs, sometimes it is difficult to find it. Only when the controlled equipment fails to run or stops at a certain position when debugging […]

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The memory of s7-1200 PLC is explained in detail

For us to carry out PLC programming, we need to use the programming software component, which is also called memory. The user program can read and write the data stored in these storage areas. The memory address of s7-1200plc includes input I, output Q, bit memory m, data block dB, and local or temporary memory […]

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Learning PLC is learning Siemens or Mitsubishi?

There are many kinds of PLC, most of which are European, Japanese and American. Siemens is the main PLC in Germany, Mitsubishi, Omron and Panasonic in Japan, and Rockwell (a-b), General Electric (GE) and Modicon in America. PLC technology in the United States and Europe is researched and developed independently under the condition of mutual […]

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PLC free communication port setting

Taking Schneider’s somachine as an example, this paper introduces the free communication port setting of PLC programming software based on ice61163-3 programming standard. This is a common communication method with PLC as data acquisition object. 1. Set free port communication parameters Use SL1 port to set basic parameters For example, m218plc has SL1 and SL2 […]

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The concept of programmable logic controller

Programmable logic controller (PLC) is a kind of digital electronic equipment with microprocessor, which is used for automatic control. It can load control instructions into memory at any time for storage and operation. The programmable controller is composed of internal CPU, instruction and data memory, input and output unit, power supply module, digital analog unit […]

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Software defined PLC changes industrial Internet system architecture

With the continuous integration of IT technology such as cloud computing, machine learning and big data and ot technology in the field of industrial control, industrial Internet and intelligent manufacturing have become the general trend of industrial production in the future. Industrial Internet and intelligent manufacturing give more flexibility to future manufacturing, and small batch, […]

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In the industrial field, embedded or PLC?

PLC: programmable logic controller. PLC is a digital operation electronic system specially designed for application in industrial environment. It adopts a kind of programmable memory, in which the instructions of logic operation, sequence control, timing, counting and arithmetic operation are stored, and various types of mechanical equipment or production process are controlled by digital or […]

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