c# - 查找 GPIB 总线上的设备列表

Question

我需要查询 GPIB 总线上的测试设备。

我尝试浏览 NationalInstruments.VisaNS。

NationalInstruments.NI4882.AddressCollection.GetEnumerator();

即 GPIB::6::INSTR、GPIB::7::INSTR、......GPIB::20::INSTR。

Answer 1

如果您使用 Vb 或 C#，请使用示例程序磁盘中的 Visa32.bas 或 Visa32.cs

int DefaultSessionId= 0;
int SessionId= 0;
int LastStatus = 0;
string Address = "GPIB0::6" ; //any address

//Session Open
LastStatus = visa32.viOpenDefaultRM(out DefaultSessionId);

//Connection Open
LastStatus = visa32.viOpen(DefaultSessionId, Address + "::INSTR", 0, 0, out sessionId);
LastStatus = visa32.viSetAttribute(SessionId, visa32.VI_ATTR_TERMCHAR, 13);// Set the termination character to carriage return (i.e., 13);
LastStatus = visa32.viSetAttribute(SessionId, visa32.VI_ATTR_TERMCHAR_EN, 1);// Set the flag to terminate when receiving a termination character
LastStatus = visa32.viSetAttribute(SessionId, visa32.VI_ATTR_TMO_VALUE, 2000);// Set timeout in milliseconds; set the timeout for your requirements

//Communication
LastStatus = visa32.viPrintf(SessionId, command + "\n");//device specific commands to write
StringBuilder message = new StringBuilder(2048);
LastStatus = visa32.viScanf(SessionId, "%2048t", message);//Readback

//Session and Connection Close
visa32.viClose(SessionId);
visa32.viClose(DefaultSessionId);

参考自