Exfo FTB-500 (Window XP) Manuel d'utilisateur télécharger pdf (Page 451)

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COM Properties and Events

FTB-500 443

Properties

For example, if you receive this response (here,

values are expressed in decimal instead of binary

for easier readability):

# 2 1 3 7 5 8 9 2 ...

The byte that immediately follows the # contains

2, which means that you have to read the two

following bytes to know the length (in bytes) of

the retrieved data. The bytes indicate 1 and 3.

The length will then be 13 bytes. The actual

response will begin at byte number 5, in this

case.

Possible error(s) Timeout: This error will occur if the allowed

delay has expired before the preceding Write

operation could send a response to the output

queue. For information on timeout setting, see

Initialize on page 443.

QueryUnterminated: This error will occur if the

output queue is empty (for example, no query

has been made previously).

Initialize

Description With this method you can configure the timeout

value that is, the allowed delay for Read and

Write operations, in milliseconds.

Syntax object.Initialize(Timeout)

Parameter(s) Timeout: Required. A numeric value

corresponding to the delay in milliseconds.

Notes If the Initialize method is not invoked, the default

value is 10 000 milliseconds.

ReadBinary

1 2 ... 446 447 448 449 450 451 452 453 454 455 456 ... 480 481

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Exfo FTB-500 (Window XP) Manuel d'utilisateur Page 451

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