imaqIODrive

Format

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

Purpose

Drives general-purpose digital outputs with the static I/O on the NI-IMAQ I/O device.

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 drive.

signalType is the type of signal to drive. 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 of the signal you want to drive.

value is the state you want to drive the line 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 Outs.

Return Value

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