Measurement-computing Data Acquisition Systems rev.10.4 Uživatelský manuál stáhnout pdf (Strana 272)

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4.5-42 Daq API Command Reference 908794 Programmer’s Manual

daqOnline

Also See: daqOpen, daqClose

Format

daqOnline(handle, online)

Purpose

daqOnline determines if a device is online.

Parameter Summary

Parameter Type Description

handle DaqHandleT

Handle of the device to test for online

online PBOOL

Boolean indicating whether the device is currently online

Parameter Values

handle: obtained from the daqOpen function

online: a pointer to a boolean value; values are either true ( ≠ 0) or false ( = 0)

Returns

DerrNoError No error

Function Usage

The handle parameter for this function must be a valid device handle which has been opened using the daqOpen

function. The online parameter indicates the current online state of the device (true = device online;

false = device not online).

Prototypes

C/C++

daqOnline(DaqHandleT handle, PBOOL online);

Visual BASIC

VBdaqOnline&(ByVal handle&, online&)

Program References

None

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