GpQopc

image\BLTLRGSQ.gifBoards that Support the Function image\SETUP.gif image\SANBTN.gif

 

 

image\head10.gif Operation            Responds with ASCII "1" after all the operations being executed have been completed. (*OPC?)

 

image\head10.gif Format                 

(VB.NET)

Dim Adr, Srlen, Ret As Integer

Dim Srbuf As String

Ret = GpQopc(Adr, Srlen, Srbuf)

 

(C)

DWORD Adr, Srlen, Ret;

char * Srbuf;

Ret = GpQopc(Adr, &Srlen, Srbuf);

 

(C#)

uint Adr, Srlen, Ret;

StringBuilder Srbuf = new StringBuilder(xxxx); /* (xxxx specifies the maximum amount of data.) */

Ret = gpib.Qopc(Adr, out Srlen, Srbuf);

 

(Python)

Adr, Srlen, Ret = ctypes.c_ulong(), ctypes.c_ulong(), ctypes.c_ulong()

Srbuf = ctypes.create_string_buffer(xxxx) #(xxxx specifies the maximum amount of data.)

Ret.value = GpibPy.GpQopc(Adr, ctypes.byref(Srlen), Srbuf)

 

image\head10.gif Mode                   Master mode only

 

image\head10.gif Parameters

Adr              :   Destination device address

Valid range : 0 to 30

 

Srlen            :  (Input value) Maximum data length in bytes that can be received

(Return value) Receive data length in bytes

 

Srbuf           :   Receive buffer

 

Ret              :   Return value

0      : Normal completion

1      : Delimiter and EOI reception complete

2      : EOI reception complete

80     : GpIni() hasn't execute

128   : Receive data overflow

140   : Asynchronous function is executing now

240   : ESC key pressed

242   : Miss in address specified

243   : Miss in buffers

252   :  GP-IB error

253   :  There is no receive data

254   :  Timeout

255   :  Parameter error

(See "Return Values" for details.)

 

image\head10.gif Notes

1) This function cannot be used for a device that does not support IEEE-488.2.

 

2) See GpListen for notes about receive buffer and receive data length in bytes.