B&B Electronics 4 Channel Input Buffer Board SDAIBB Instrukcja Użytkownika Pobierz pdf (Strona 45)

Documentation Number UD128A8D4602 Manual Chapter 5 41

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

I/O Point Group Configurations

'\**Digital I/O Point Group possible

configurations

Public Const DIGITAL_INPUT As Long = &H20000003

Public Const DIGITAL_OUTPUT As Long = &H20000004

Public Const DO_NORMAL As Long = &H80000004

'\**Analog Input Endpoint possible configurations

Public Const AD_12BIT_SE As Long = &H40000002

Public Const AD_12BIT_DIFF As Long = &H40000003

'\**Analog Output Endpoint possible configurations

Public Const DA_10BIT As Long = &HC0000005

‘ \ ** Flag for Invalid Data in Timed Samples

Public Const BDAQ_INVALID_DATA_VALUE As Long _

= &H80000000

5. Create an instance of BBDaqEnum and set it to your variable.

Set Connected = CreateObject("BDaq.BBDaqEnum")

‘ \ Connected is your variable - This should be done only once in

‘ \ the program, probably when the startup form loads. This

‘ \ enumerator must exist while any device is open.

Finding UD Devices

6. Next see if any UD devices are available

If Connected.Devices.Count > 0 then

‘ \ 7. Set your device variables equal to each connected device.

‘ \ By the order they were connected:

Set Device1 = Connected.Devices(1)

‘ \ Or By Name: - The named device must be attached

Set Device1 = Connected.Devices(“DAQ1”)

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B&B Electronics 4 Channel Input Buffer Board SDAIBB Instrukcja Użytkownika Strona 45