Documentation

National Instruments PXI-6527 Digital Output

PXI-6527 Digital Output block

Library

Simulink® Real-Time™ Library for National Instruments®

Note

The PXI®-6527 has one chip with 3 ports (A,B,C) for digital output. Each port has a maximum of 8 digital output lines. Use a separate driver block for each port.

Scaling of Input to Output

I/O Module Output

Block Output Data Type

Scaling

OPTO

Double

<0.5 = OPTO is OFF, current not flowing
≥0.5 = OPTO is ON, current can flow

Block Parameters

Channel vector

Enter numbers between 1 and 8 to select the digital output lines used with this port. This driver allows the selection of individual digital output lines in arbitrary order. The number of elements defines the number of digital lines used.

For example, to use all of the digital outputs for one port, enter

[1,2,3,4,5,6,7,8]

Number the lines beginning with 1 even if this board manufacturer starts numbering the lines with 0.

Port

From the list, choose either A, B, or C. The Port parameter defines which port is used for this driver block. Each port has a maximum or 8 digital output lines. In each case, one block is required for each port.

The documentation for this board from National Instruments labels these ports 3, 4, and 5.

Reset vector

The reset vector controls the behavior of the channel at model termination. Enter a scalar or a vector that is the same length as the channel vector. If you specify a scalar value, that setting is replicated over the channel vector. If you specify a value of 1, the corresponding channel is reset to the value specified in the initial value vector. If you specify a value of 0, the channel remains at the last value attained while the model was running.

Initial value vector

The initial value vector contains the initial voltage values for the output channels. Enter a scalar or a vector that is the same length as the channel vector. If you specify a scalar value, that value is replicated as the initial value over the channel vector. The channels are set to the initial values between the time the model is downloaded and the time it is started.

Sample time

Enter the base sample time or a multiple of the base sample time (-1 means sample time is inherited).

PCI slot (-1:autosearch)

If only one board of this type is in the target computer, enter -1 to locate the board.

If two or more boards of this type are in the target computer, enter the bus number and the PCI slot number of the board associated with this driver block. Use the format [BusNumber,SlotNumber].

To determine the bus number and the PCI slot number, type:

tg = slrt;
getPCIInfo(tg, 'installed')

External Websites

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