B&B Electronics 4 Channel Input Buffer Board SDAIBB Manual do Utilizador descarregar pdf (Página 56)

52 Chapter 5 Documentation Number UD128A8D4602 Manual

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph 353-91-792444 – Fax 353-91-792445

When using the GetSamples Method, add the

following to the constant to indicate bad data.

Public Const BDAQ_INVALID_DATA_VALUE As Long =

&H80000000

Be sure to check for this invalid value in the examples of timed-

triggered sampling.

For a summary of Properties/Methods for the UD modules, look on

the CD-ROM disc. We will publish a summary if needed for future

models.

This ends the information on the current Library Functions

Note: During programming, if your program has an error while

running within VB, the device may be left open. Then when you fix

your error and restart, your program will not be able to Open the

device since it was left open. Save your work. Unplug the USB

cable, then reconnect it. If you can’t recover this way, save your

work, exit VB, then restart, re-load your code. It should work

normally again.

If your compiled program makes an error and leaves a device open,

so it can’t be accessed, unplug the USB cable, reconnect.

Only one program at a time can access a UD128A8D device

collection.

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B&B Electronics 4 Channel Input Buffer Board SDAIBB Manual do Utilizador Página 56