pipx40_readInputState

ViStatus pipx40_readInputState (ViSession instrumentHandle, ViUInt32 subunitNumber, ViUInt32 channelNumber, ViPBoolean state);

Purpose

Obtains the state of an individual input channel.

Parameters

Input
Name	Type	Description
instrumentHandle	ViSession	Instrument handle obtained by the pipx40_init call used to open the card.
subunitNumber	ViUInt32	The number of the sub-unit to access. Valid Values: 1 thru the number of input sub-units available on the chosen card
channelNumber	ViUInt32	The number of the individual input channel of the chosen sub-unit to be read. Valid Values: 1 thru the number of inputs available on the chosen sub-unit
Output
Name	Type	Description
state	ViBoolean (passed by reference)	Variable to receive the chosen input channel's state. Values: VI_OFF = channel inactive or logic '0' VI_ON = channel active or logic '1'

Return Value

Name	Type	Description
status	ViStatus	A numeric code indicating the success or failure of the operation. VI_SUCCESS = Successful operation. Negative values are error codes and positive values are warnings. To get a description of an error, pass the error code to pipx40_error_message.

References

Input
Pickering Interfaces PXI VISA
Alphabetical Function Index
Hierarchical Function Index