Coherent FieldMaxII-TOP Manual de usuario descargar pdf (Pagina 68)

FieldMaxII-TO User Manual

is a countdown value that starts at 60 and decrements by

one for each event. The terminal value for ZeroDevice-

TimeoutCounter will be 0 or -1 when zero completes. 0

indicates a successful completion. -1 indicates a failure.

Teardown Devices connected to the application must be closed. The

cFM2Notify object passes a reference to the

cFM2Devices collection with every callback to the

application code via the IFM2DeviceEvents_

NotifyDeviceStatus callback method. All connections

must be closed by calling the IFM2Device_

CloseAllUSBDeviceDrivers() using the IFM2Device_

DeviceHandle as the method argument.

The following Visual Basic 6.0 code shows how to close

the connections:

‘Global declarations:

‘Devices collection returned from the callback object

Dim DevicesList As cFM2Devices

‘Executable code:

If Not (DevicesList Is Nothing) Then

If Not (DevicesList.Count = 0) Then

Dim device As IFM2Device

For Each device In DevicesList

device.CloseAllUSBDeviceDrivers device.DeviceHandle

End If

The remaining teardown is simply the process of

undoing the setup.

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Coherent FieldMaxII-TOP Manual de usuario Pagina 68