You can configure PFI 3 on the NI 656x to be single-ended or LVDS terminals using the properties and attributes shown in the following table. In LabVIEW, you must specify the exported signal as the active channel when you use the property.

LabVIEW Property C Attribute
Start Trigger Digital Edge Terminal Configuration NIHSDIO_ATTR_DIGITAL_EDGE_START_TRIGGER_TERMINAL_CONFIGURATION
Script Trigger Digital Edge Terminal Configuration NIHSDIO_ATTR_DIGITAL_EDGE_SCRIPT_TRIGGER_TERMINAL_CONFIGURATION
Script Trigger Digital Level Terminal Configuration NIHSDIO_ATTR_DIGITAL_LEVEL_SCRIPT_TRIGGER_TERMINAL_CONFIGURATION
Reference Trigger Digital Edge Terminal Configuration NIHSDIO_ATTR_DIGITAL_EDGE_REF_TRIGGER_TERMINAL_CONFIGURATION
Pause Trigger Digital Level Terminal Configuration NIHSDIO_ATTR_DIGITAL_LEVEL_PAUSE_TRIGGER_TERMINAL_CONFIGURATION
Marker Event Terminal Configuration NIHSDIO_ATTR_MARKER_EVENT_TERMINAL_CONFIGURATION
Ready for Start Event Terminal Configuration NIHSDIO_ATTR_READY_FOR_START_EVENT_TERMINAL_CONFIGURATION
Ready for Advance Event Terminal Configuration NIHSDIO_ATTR_READY_FOR_ADVANCE_EVENT_TERMINAL_CONFIGURATION
Data Active Event Terminal Configuration NIHSDIO_ATTR_DATA_ACTIVE_EVENT_TERMINAL_CONFIGURATION
End of Record Event Terminal Configuration NIHSDIO_ATTR_END_OF_RECORD_EVENT_TERMINAL_CONFIGURATION
Exported Start Trigger Terminal Configuration NIHSDIO_ATTR_EXPORTED_START_TRIGGER_TERMINAL_CONFIGURATION
Exported Advance Trigger Terminal Configuration NIHSDIO_ATTR_EXPORTED_ADVANCE_TRIGGER_TERMINAL_CONFIGURATION
Exported Reference Trigger Terminal Configuration NIHSDIO_ATTR_EXPORTED_REF_TRIGGER_TERMINAL_CONFIGURATION
Exported Script Trigger Terminal Configuration NIHSDIO_ATTR_EXPORTED_SCRIPT_TRIGGER_TERMINAL_CONFIGURATION
Exported Pause Trigger Terminal Configuration NIHSDIO_ATTR_EXPORTED_PAUSE_TRIGGER_TERMINAL_CONFIGURATION
Note Configuring PFI 3 is supported only on NI 656x devices.

Refer to Using Attributes with NI-HSDIO for more information about setting attribute-based configuration options.