Applied-motion SV7-Q-EE Manual do Utilizador descarregar pdf (Página 16)

6/26/2010

920‐0032a3eSCLCommunicationReferenceManual Page16

‘ next line fixes it

Winsock1.RemoteHost = Winsock1.RemoteHostIP

' first 16 bits of packet are the ID (opcode)

If UBound(udpData) >= 1 Then

packetID = 256 * udpData(0) + udpData(1)

If packetID = 7 then ' SCL response

SCLrx = ""

For n = 2 To UBound(udpData)

SCLrx = SCLrx & Chr(udpData(n))

Next n

MsgBox SCLrx

End If

End Sub



C#.NET

The.NETlanguagesareMicrosoft’smodern,objectorientedWindowsapplicationbuildingtoolsandinclude

robustEthernetsupport.WepresentthisexampleinC#.

Makesureyourprojectincludesthisline,providingaccesstoanEthernetsocket:

using System.Net.Sockets;

Inyourformheaderyoumustdeclarea UdpClientobjectandcreateaninstance,whichcanbedoneinthe

sameline.Thelocalportnumberisincludedinthe“newUdpClient”call.Thisistheportnumberthatwillbe

reservedonthePCforyourapplication.

static UdpClient udpClient = new UdpClient(7777);

Toopentheconnection,invoketheConnectmethod,specifyingthedrive’sIPaddressandportnumber:

udpClient.Connect(“192.168.0.130”, 7775);

Tosend“RV”tothedrive:

//create a string loaded with the SCL command

Byte[] SCLstring = Encoding.ASCII.GetBytes(“RV”);

// create a byte array that will be used for the actual

// transmission

Byte[] sendBytes = new Byte[SCLstring.Length + 3];

// insert opcode (07 is used for all SCL commands)

sendBytes[0] = 0;

sendBytes[1] = 7;

// copy string to the byte array

System.Array.Copy(SCLstring, 0, sendBytes, 2, SCLstring.Length);

// insert terminator

sendBytes[sendBytes.Length - 1] = 13; // CR

// send it to the drive

udpClient.Send(sendBytes, sendBytes.Length);

GettingresponsesbackfromthedriveinC#isamorecomplicatedthanVB6.Youhavetwochoices:pollfora

responseorcreateacallbackfunctionthatwillprovideatruereceiveevent.

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