imaqIOSetShutdownState

Format

rval = imaqIOSetShutdownState(IMAQIO_SESSION id, IMAQIOSignalType signalType, unsigned long signalNumber, IMAQIOSignalState value);

Purpose

Sets the shutdown state of one of the output signals on the NI-IMAQ I/O device. The default shutdown state is IMAQIO_SIGNAL_STATE_LOW.

Parameters

Name	Type	Direction
id	IMAQIO_SESSION	input
signalType	IMAQIOSignalType	input
signalNumber	unsigned long	input
value	IMAQIOSignalState	input

Parameter Discussion

id is the ID of the session to set the shutdown state on.

signalType is the type of signal to set the shutdown state on. The following values are valid for this parameter:

Name	Constant	Description
IMAQIO_SIGNAL_ISO_OUT	3	ISO output signals are general-purpose outputs.
IMAQIO_SIGNAL_TTL_OUT	6	TTL output signals are general-purpose outputs.

signalNumber is the line number to set the shutdown state on.

value is the shutdown state to set the device to. The following values are valid:

IMAQIO_SIGNAL_STATE_HIGH	Drives the line high when the signal is TRUE.
IMAQIO_SIGNAL_STATE_LOW	Drives the line low when the signal is TRUE.
IMAQIO_SIGNAL_STATE_HI_Z	Disables output on the line. This option is valid only for TTL output signals.

Return Value

This function returns 0 on success. On failure, this function returns an error code. For information about the error code, call imaqIOGetErrorText.