AI_ReadChannel | ![]() ![]() ![]() ![]() |
AI_ReadChannel
@ Description
This function performs a software triggered A/D conversion (analog input) on an analog input channel and returns the value converted.
@ Cards Support
9111, 9112, 9113, 9114, 9118, 9812/10
@ Syntax
I16 AI_ReadChannel (U16 CardNumber,
U16 Channel, U16 AdRange, U16 *Value)
@ Parameter
CardNumber : The
card id of the card that want to perform this operation.
Channel : Analog
input channel number.
Range: 0 through 15 for PCI-9112, PCI-9111, PCI-9118
Range: 0 through 31 for PCI-9113, PCI-9114
Range: 0 for PCI-9812/10
AdRange : The
analog input range the specified channel is setting. Please refer to the
Appendix B for the valid range values.
Value : The A/D
converted value. The data format in Buffer is described as below:
PCI-9113
16-bit unsigned data:
B15 ... B12 D11 D10 ... D1 D0
where D11, D10, ... , D0 : A/D converted data
B15 ~ B12: dont care
PCI-9114
16-bit signed data:
D15 D14 ... D1 D0
where D15, D14, ... , D0 : A/D converted data
For PCI-9111, PCI-9112, PCI-9118, and PCI-9812, please refer to the description
of Buffer argument of
AI_ContReadChannel() for the correct data format.
@ Return Code
NoError, ErrorInvalidCardNumber, ErrorCardNotRegistered, ErrorFuncNotSupport, ErrorInvalidIoChannel, ErrorInvalidAdRange