Understand the stretch film packaging machine programmable control of the development of electrical appliances

Stretch film packaging machine programmable control of the development of electrical appliances. Stretch film packaging machine is a automatic vacuum packaging machine, stretch film in modernization production equipment such as vacuum packaging machine, there are a large number of switches, digital, pulse volume and analog control equipment such as motor start-stop, opening and closing of electromagnetic valve, the product of the count, set and control of the temperature, pressure, flow, etc. , in the past, more control is mainly with relay or discrete electronic circuit, but with the rapid development of production, of these automatic control device is put forward a more general, volatile, easy to repair, reliable and economic requirements. Old device of the fixed wiring obviously can't adapt to the requirements.

stretch film packaging machine programmable control of the development of electrical appliances. With the development of electronic industry, people developed a variety of control device can meet the above requirements, more representative is:

1, matrix type logic control electrical appliances.

2, a microprocessor.

3, programmable control system.

4, collecting and distributing control system of the computer.

obviously, the production equipment for the control unit is not necessarily with the new. In the stretch film packaging machine and other food machinery equipment, we can still use the ever popular logic control system, and even the relay system.

stretch film vacuum packaging machine can be partial program control system is the core for the programmable control electric equipment, hereinafter referred to as PLC, it is only in 1969 started to develop. It shall, in accordance with the mature and relay control concepts and design ideas, using the continuous development of new technology, new electronic devices, gradually formed the characteristic of various series of products.

stretch film packaging machine programmable control of the development of electrical appliances. Has the world's industrial powers are racing to develop and produce the products. In the introduction of foreign products in China at the same time, also began to introduce technology, assembling, development, finalize the design, production, in a word, has become a tool to solve the problem of automatic control of PLC, it is more and more get the attention of people.

programming control appliances is compiled, editing, debugging, monitor the equipment of the user program. It through communication interface with CPU, achieve the man-machine dialogue.

stretch film packaging machine programmable control of the development of electrical appliances. Stretch film packaging machine programming control electric appliance has a simple model and two kinds of intelligent, simple general type keyboard using command statement mnemonic FuJian, and intelligent ladder diagram language is often used to bond.

stretch film packaging machine programming control appliances simple form can only be online programming, while intelligent can also be offline programming. A lot of PLC manufacturer with IBM - PC/XT modified intelligent programming control of electric equipment, equipped with different application software. It not only can complete sc-reens ladder diagram programming, can also with communication networks, with functions of transaction management, etc.

stretch film packaging machine programming control electrical appliances can be multi-usage. Once finished programming, can be used by other PLC. It can also be equipped with other equipments, such as printers, EPROM writer, high precision, large screen color graphics, people now interface unit and other external equipment monitoring and control system. But generally have a programming control electric equipment, can basically meet the matching equipment of access file, display monitor, the function of the man-machine dialogue.

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