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Chapter 2

Function Reference — GPCTR_Change_Parameter

National Instruments Corporation

2-203

NI-DAQ FRM for PC Compatibles

Output counterValue

}

GPCTR_Control (deviceNumber, gpctrNum, ND_RESET)

paramID =

ND_GATE

This signal controls the operation of the general-purpose counter in some applications. The
default values of paramValue for paramID =

ND_GATE

are shown in Table 2-24.

Note

If you have configured an analog hardware trigger using the

Config_HW_Analog_Trigger

function, the resulting analog trigger circuitry

output signal is available as

ND_PFI_0

Table 2-24. Legal Values for paramValue when paramID =

ND_GATE

E Series and 445X Devices

6602 Devices

455X Devices

ND_PFI_0

through

ND_PFI_9

—the 10 I/O

connector pins.*

ND_RTSI_0

through

ND_RTSI_6

—the seven

RTSI lines.

ND_IN_START_TRIGGER

and

ND_IN_STOP_TRIGGER

—

the input section triggers.

ND_OTHER_GPCTR_OUTPUT

—the output of the other
general-purpose counter
(See Table 2-22 for
definition of other counter).

ND_PFI_38

ND_PFI_34

ND_PFI_30

ND_PFI_26

ND_PFI_22

ND_PFI_18

ND_PFI_14

, and

ND_PFI_10

ND_RTSI_0

through

ND_RTSI_6

—the seven

RTSI lines.

ND_OTHER_GPCTR_OUTPUT

(See Table 2-22 for
definition of other counter).

ND_OTHER_GPCTR_SOURCE

—the source of the other
general-purpose counter
(See Table 2-22 for
definition of other counter).

ND_PFI_30

ND_PFI_26

ND_PFI_22

ND_PFI_18

ND_PFI_14

, and

ND_PFI_10

ND_RTSI_0

through

ND_RTSI_6

—the seven

RTSI lines.

ND_OTHER_GPCTR_OUTPUT

(See Table 2-22 for
definition of other counter).

ND_OTHER_GPCTR_SOURCE

—the source of the other
general-purpose counter
(See Table 2-22 for
definition of other counter)

ND_PFI_2

and

ND_PFI_5

not valid for 445X devices.