The article introduces a method of applying SCM/SuperDX and EMM-4M-XT modules to achieve multi-protocol serial ports communication design. The author emphasizes the hardware setup of the modules,the idea of software design and the typical application about multi-serial ports communication in DOS platform.
Then ,it detailedly discuss the model of NC machine tools's integrative network in broad and home:point to point control mode, multi-serial ports board control mode,control mode based on fieldbus, control mode based on ethernet network transfer serial server,and analyse their merit and shortcoming and applied place. Based on this and the the actual circus of ZhenJiang LanBaoShi electron industrial corporation,the blue print of integrative network of ethernet network transfer serial server is setted up.
The C8051F120 chip is adopted in the FCS, which is a high-speed high-performance mixed-signal System-on-a-Chip MCU. The communication of FCS is composed of multi-serial ports(such as RS422 and CAN) and parallel ports based on dual-port SRAM.
By applying disturb control technic,the computer monitor system of spinning machine consist of field manager computer,field monitor computer and sensors. Field manager computer connect with office automation computer network through Ethernet. Field manager computers and monitor computers which are connected through PROFIBUS field control bus form workshop sub network and flied monitor computer connect sensors on spinning machine through multi-serial ports.
This paper has given a design of laser atmospheric data and audio transfer system,which with laser as information carrier,single chip microcontroller as manage comuter and DSP as the high speed audio compression parts.The audio signal from microphone,converted by A/D,compressed by DSP,forming a serial string with a speed of 2.4 to 9.6kbps.In the same time ,serial string with a speed of 2.4 to 9.6kbps can be extracted to digital audio signal of 8kHz13bit.Under the supervising of CPU,the compress...
A brief summary of serial ports communication is offered in this paper. This article puts emphasis on analysis and discussion about solutions of multi serial ports communication programming provided by Moxa corporation.
The paper presents a new method that is used to communicate dynamically between multi serial ports or peripherals and one PC. The theory of serial communication is discussed. The multi serial communication based on multithreading technigue with WIN32API is presented. Meanwhile, the elements of influencing serial communication are researched. The method resolves the question of real time responding in the serial communication validly, reduces losing ra...