In the actual system, the man-machine interface and PLC are not together, the central computer is generally placed in the control room, and the PLC is installed in the on-site workshop, and the distance between the two is often from tens of meters to several kilometers. If you are wiring, you need to dig trench construction, which is more troublesome. In this case, it is more suitable for wireless communication. Siemens PLC dedicated wireless data terminal DTD434M, embedded RS232 / RS485 dual interface, DTD434M can with Siemens PLC, configuration software, human-machine interface, touch screen, smart instrumentation and other industrial products consisting of wireless monitoring network, Siemens PPI protocol wireless, wireless The configuration of MODBUS protocol provides a low-cost solution for short-range wireless communication in the field of industrial measurement and control , which greatly saves the cost of system integrators on-site commissioning and after-sale maintenance services. The DTD434M industrial-grade wireless data communication terminal can directly replace traditional wired solutions such as RS232 RS485, completely solving the problems of cumbersome construction of the wired solution and high maintenance costs of the equipment in the later period. (1) Installing touch screen software (2) Create a test screen (3) Create a communication connection (4) Select device for transmission (5) Enter the touch screen operating state (1) Test IO: When the M0.0 button on the touch screen is pressed, Q0.1 immediately pulls in and the Q0.1 status returns to the touch screen; when the PLC's I0.0-I0.3 is turned on, The I0 status light on the touch screen interface also lights up at the same time. (2) Set slave station communication port parameters: Slave address: 2, baud rate: 19200, communication method: 8 E 1 (3) Download S7_200 test program: Download this S7_200 wireless PPI program (P0-19.2k).mwp program to S7-200. Outdoor Cpe,Router 4G Outdoor,4G Router Bridge Cpe,300Mbps Wifi Ap Outdoor 4G Lte Cpe Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommiot.com
I. Wireless PPI Network Composition