modbus serial communication

For implementationYou can use APIs to implement Windows serial communication, but it is inconvenient. You can also use the Active control. InsertThe Active control Microsoft comm contronl (MSComm ). SComm control attributes MSComm control attributes Commp ORT: Set the serial port number. Type: short: 1-comm1 2-comm2. Settings: sets the

How to interconnect single-chip serial communication rxd with txd Category:8051 2012-04-0711: 35 Read by 348 Comment (0) Favorites Report Reprinted from: http://blog.csdn.net/sdwuyulunbi/article/details/6632382 I believe many people are confused about how to connect rxd and txd when the microcontroller communicates with a computer or chip. In some circuit diagrams, some are

Download the installation tool:1.If the computer (notebook) does not have a serial port interface, you need to use a usb-serial conversion line, where the use of prolific usb-serial usb--serial conversion line, the first need to install the corresponding Win7 serial conversi

, EventArgs e) + { A } at - //How to open the COM1 button - Private voidButton1_Click (Objectsender, EventArgs e) - { - string[] str = Serialport.getportnames ();//get the serial name - if(str = =NULL) in { -MessageBox.Show ("This machine does not have serial port"); to return; + } - Else th

messagereceived method, this method can receive the serial port information from the node./* Broadcast a VERSION+INTERVAL message. */void Sendinterval () {Oscilloscopemsg omsg = new Oscilloscopemsg ();Omsg.set_version (version);Omsg.set_interval (interval);try {Mote.send (MOTEIF.TOS_BCAST_ADDR, omsg);}catch (IOException e) {Window.error ("Cannot send message to Mote");}}This is the Sendinterval method, this method has a mote.send call, is to send PC

Label: Serial Communication single-chip microcomputer query method programming how to receive data from computer single-chip microcomputer how to receive data from computer How can I use a computer to send data to a single-chip computer and how can the single-chip computer receive data? Jp3 is connected to P0 port. Send a hexadecimal data from the computer to the microcontroller, and then view the digital

In the last blog, we introduced the thread application in serial communication to solve the problem of receiving data. But in the end, we have 3 questions to ask. Today we'll show you how the first problem is handled, that is, if the data length of the returned data is different, how to write a loop in the Read method to read the full return data. Of course if you haven't read my last blog, here I'll write

: in 1-TenExperiment 8 Network communication Experiment 2 multicast communication while(MSGPKT) {Switch(MSGPKT-GT;HDR.Event) { CaseZdo_state_change://after setting up the network, set the eventGenericapp_nwkstate= (devstates_t) (msgpkt->hdr.status);//??????? if(Genericapp_nwkstate==dev_zb_coord)//When the node is initialized to the coordinator, perform the following{halledblink (hal_led_2,0

[Serialization] Design and Implementation of the C # communication (Serial Port and network) framework-2. Overall Design of the framework, Contents C # design and implementation of communication (Serial Port and network) framework... 1 (SuperIO)-overall framework design... 1 Chapter II Overall framework design... 2 2.1

Abstract: recently in the QT Serial communication section. In verifying the serial communication part is feasible, whether feasible, through the virtual port, the monolithic computer to test.This paper mainly write single-chip serial com