Time: 9/25/2017 11:17:36 AM

Then a simple, so-called special is TTL conversion, and the topic is PLC, about 40 yuan, and the content is computer and PLC communication GP2500 profaace touch screen, to see that their needs in the end, with a MAX232 chip on it! Generally used 232 communication protocol, very different, you can do it yourself, as well as Ethernet interface, your dedicated communications line, pay attention to PLC communications, is 232 or 422?! The questions you ask! This touch screen is more advanced, wiring is not the same: touch screen, communication port for the park mouth, inside with 3 lines, you can go to the market to buy a computer communications