Measurement-computing GPIB-488 Manual do Utilizador descarregar pdf (Página 71)

Chapter 4 GPIB 488.2 Library Reference

GPIB-488 4-3 Programming Reference Manual

DevClear

Clears one device.

Syntax

C DevClear(int board, short address)

Parameters

board is an integer which identifies the GPIB board to be used for this operation. In most

applications, this value is 0.

address is the GPIB address of the device to clear.

Returns

ibsta will contain a 16-bit status word as described in Appendix B, IBSTA.

iberr will contain an error code, if an error occurred.

Usage Notes

This routine sends the GPIB Selected Device Clear (SDC) message to the specified device.

To clear multiple devices, use the

DevClearList routine.

address is set to NOADDR, then all connected devices on the GPIB is cleared through the

Universal

Device Clear (UDC) message.

Example

This example clears the device at GPIB primary address 4, secondary address 30 connected

to GPIB board 0.

C DevClear(0, MakeAddr (4,30));

/* Use MakeAddr macro (in GPIB.H) to pack

primary and secondary address */

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Measurement-computing GPIB-488 Manual do Utilizador Página 71