MATLAB XPC TARGET 4 - DEVICE DRIVERS Specifiche Scaricare il pdf (Pagina 326)

100

101

9 ComputerBoards

9-70

Driver Block Parameters

Channel Vector - Enter numbers between 1 and 8 to select the digital input

lines used with this port. This driver allows the selection of individual digital

input lines in any order. The number of elements defines the number of digital

lines used.

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

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

Number the lines beginning with 1 even if the board manufacturer starts

numbering the lines with 0.

Port - From the list choose either A, B, or C. The I/O board has a 8255 chip

with 3 ports. The Port parameter defines which port of the 8255 chip is used

for this driver block. Each port has a maximum or 8 digital lines that can be

configured as inputs or outputs depending on which driver block is chosen. In

each case, one block is needed for each port.

Sampletime - Enter a base sample time or a multiple of the base sample time.

BaseAddress - Enter the base address of the board. This entry must

corresponds to the DIP-switch settings on the board. For example, if the base

address is 300 (hexadecimal), enter

0x300

CIO-DIO24H Digital Output

The CIO-DIO24H has one 8255 chip with 3 ports (A,B,C). Each port has a

maximum of 8 digital I/O lines that can be configured as inputs or outputs.

Use a separate diver block for each port. By selecting the digital output driver

block, the port is configured as output.

Scaling Input to Output

Hardware Output Block Input Data Type Scaling

TTL double < 0.5 = TTL low

0.5 = TTL high

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MATLAB XPC TARGET 4 - DEVICE DRIVERS Specifiche Pagina 326

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