Why do you say PLC easy to use - — PLC characteristics introduction

Using PLC to realize control of the system is very convenient. This is because: first, the establishment of the PLC control logic is a program, use program instead of hardware wiring. Programming than wiring, change the program than to change the wiring, of course is much more convenient! Secondly PLC hardware is a highly integrated, has integrated into all sorts of miniaturization of the module. Also, the module is necessary, has achieved its seriation and standardization. Various modules needed for the control system, PLC manufacturers, there are many cash supply, can be bought on the market. So, the system configuration of hardware and building is also very convenient. Because of this, using programmable controller to have this & quot; Can & quot; Words. Speak to the software, its procedure programmable, also it is not difficult to make up. For hardware, its configuration variable, but also easy to change. Specifically, the convenience of the PLC has five aspects: ( 1) Configuration is convenient, can meet the needs of the control system determine which PLC controller is used, what kind of, what kind of module, to how many module, is determined, in the market order to buy it. ( 2) Easy installation: PLC hardware simple installation, easy assembling. External connection with wire connector, wiring simple and a connected, replacing module, install the switch to the new module, no connection. What internal line all don't pick up, as long as do some necessary DIP switch setting or software setting, as well as the good user program can work. ( 3) Easy programming, PLC internal although no actual relay, time relay, counter, but it (by the program Software) And the system memory, these devices are actually exists. The number of relay control system is difficult to imagine. Even small PLC, number of internal relay can be thousands, time relay, counting and hundreds. Also, the relay contacts to use unlimited time. PLC internal logic devices, the user has to use does not feel what is the limit. The only consider only into something. The internal into something that is to use it more, also it doesn't matter. Large PLC control points can be put into above, which have so big of reality system? If it is not enough, can also be connected to the Internet, is not subject to any restrictions. PLC instruction system is also very rich, but have no difficulty in realizing the switch quantity, as well as the analog control. PLC and store data memory area, can store the information of all control process to save. To sum up, due to the function of PLC is strong, play its role in the control system, PLC is not itself the restrictions, but the imagination of people, or with other hardware facilities. PLC peripherals is very rich, there are many kinds of programming, and is convenient to use, and the data monitor, can monitor PLC. Using PLC software is very much also, not only can be used is similar to the relay circuit design of ladder diagram language, some still available, BASIC language, C language, so that the natural language. These also provide a convenient for PLC programming. PLC program also facilitate storage, transplantation, and to use. A standard product with perfect after the PLC program, all of this product are available. Making a copy of a. It compares the relay circuit device connection, debugging, is much more convenient and simple. ( 4) Easy maintenance: this is because: (1) the PLC work reliable, the failure of rare, this greatly reduces the maintenance workload. A third aspect of this in PLC, will also introduce further. (2) even if the PLC failure, maintenance is convenient. This is because the PLC has many fault prompt signal, such as the PLC memory to keep data of the battery voltage is insufficient, the corresponding have low voltage indicator. In addition, the PLC itself as a fault condition. So, there is a fault in the PLC controller, it is very easy to diagnosis. The back at the same time, diagnose the fault reason is very simple. According to the module troubleshooting, and module can buy spare parts market, for simple replacement. As for software, after debugging good will not fail, as long as more adjustments on the basis of using experience, just to make it perfect. ( 5) Use convenient: PLC is used for a device, if the equipment no longer in use, it can also be used in the PLC to other equipment use, as long as the adaptation of the program, can do it. If the original device with a greater difference between the new equipment, some of its modules can be reused.
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