The siemens touch screen and the s7-200smart ethernet plc wireless communication routines are in the actual system, with multiple plcs distributed in the same workshop, centrally controlled with touchscreens. Usually all set ranges from a few hundred meters to a few hundred meters. When there is a need for communication, it is better to use wireless communication when there is a larger and less beautiful amount of engineering, if there is cable. This program uses the western touch screen and 2 tesseyman s7-200smart as an example of the actual wireless communication process between the touch screen and multiple plcs. The plc wireless communication terminal - dtd418m - was used as a hardware device to achieve wireless communications in this programme. First, the formula outlines that users do not need to change the network parameters and the original program, and that via the western anderde e-u. S. P. C. Wireless communication terminal (plc) - dtd418m can directly replace the wireless ethernet communication between the touch screen and plc and achieve a stable and convenient wireless ethernet communication. Wireless network map ii, test test sets preparation plc type: s7-200smart x 2 siemens touch screen: smart 700 iev3 x 1 delta-u. S. Plc wireless communication terminal - dtd418ma x 3 block main relationship: 1 master 2 from the communications interface: rj45 interface power supply: 12-24vdc communications protocol: 12-24vdc two-wireless structures: s7, profinet, modbustcp protocol transmission distance: 100 m, 1km iii, datai-u. S., plecl, mod-techn/med-technographic transfer, omt/mtc-t. Dtd418m is not only capable of forming a wireless monitoring and control system with equipment such as plc, dcs, smart meters and sensors, but also with a remote wireless network of sites and points-to-points of product realization such as modular software, human interfaces, touch screens, metering terminals, etc., which connects equipment that is dispersed and does not allow for the digging of ditch wiring, does not need to be programmed, does not need cable, and is reliable。
