B&B Electronics 4 Channel Input Buffer Board SDAIBB Manuale Utente Scaricare il pdf (Pagina 50)

46 Chapter 5 Documentation Number UD128A8D4602 Manual

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DAVoltVar = DAVoltVar / 4.883

DAVoltVar = Int(DAVoltVar)

Setting = DAVoltVar

Device1.IoPoints(DA_0).Value = Setting

A Digital I/O that is set for an Input is Read Only and is read through

the Value property for that I/O Point. The result is Boolean.

Dim Reading as Boolean

Reading = Device1.IoPoints(DIG_IO_0).Value

‘ \ This returns True if High and False if Low.

A Digital I/O that is set for an Output is Read/Write and is set/read

through the Value property for that I/O Point. The setting/reading is

Boolean.

Device1.IoPoints(DIG_IO_3).Value = False

‘ \ Sets Digital I/O 3 Output Low.

Device1.IoPoints(DIG_IO_4).Value = True

‘ \ Sets Digital I/O 4 Output High

Reading = Device1.IoPoints(DIG_IO_4).Value

‘ \ Reading back the Output setting is the same as reading inputs

Reading Multiple Channels

Each channel is consecutive, so all channels can be read into an

array.

Dim i as Long

Dim Reading(AD_0 to AD_7) as Long

For i = AD_0 to AD_7

Reading(i) = Device1.IoPoints(i).Value

Next i

This creates an array of readings with the same index as the I/O

Point ID.

To index readings from 0 to 7, just add the index to the base I/O

point AD0 when accessing the I/O Point.

Dim i as Long

Dim Reading(7) as Long

For i = 0 to 7

Reading(i) = Device1.IOPoints(AD_0 + i).Value

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B&B Electronics 4 Channel Input Buffer Board SDAIBB Manuale Utente Pagina 50