- NI 6013/6014 User Manual

Appendix C Common Questions

Table C-1 corresponds the hardware signal names to the software signal

names in LabVIEW and NI-DAQ.

What are the power-on states of the PFI and DIO lines on the I/O

connector?

At system power-on and reset, both the PFI and DIO lines are set to

high-impedance by the hardware. This setting means that the device

circuitry is not actively driving the output either high or low. However,

these lines may have pull-up or pull-down resistors connected to them as

showninTable4-3,I/O Signal Summary for the NI 6013/6014.These

resistors weakly pull the output to either a logic-high or logic-low state.

For example, DIO<0> is in the high-impedance state after power on, and

Table 4-3, I/O Signal Summary for the NI 6013/6014,showsthe1.5kΩ

pull-down resistor. This pull-down resistor sets the DIO<0> pin to a logic

low when the output is in a high-impedance state.

Table C-1.

Signal Name Equivalencies

Hardware

Signal Name

LabVIEW

Route Signal

NI-DAQ Select_Signal

TRIG1 AI Start Trigger ND_IN_START_TRIGGER

TRIG2 AI Stop Trigger ND_IN_STOP_TRIGGER

STARTSCAN AI Scan Start ND_IN_SCAN_START

SISOURCE — ND_IN_SCAN_CLOCK_TIMEBASE

CONVERT* AI Convert ND_IN_CONVERT

AIGATE — ND_IN_EXTERNAL_GATE

WFTRIG AO Start Trigger ND_OUT_START_TRIGGER

UPDATE* AO Update ND_OUT_UPDATE

UISOURCE — ND_OUT_UPDATE_CLOCK_TIMEBASE

AOGATE — ND_OUT_EXTERNAL_GATE