Exfo FTB-500 (Window XP) Manual de usuario descargar pdf (Pagina 307)

Свойства и события COM

FTB-500 295

Свойства

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 на

стр.295.

QueryUnterminated: This error will occur if the

output queue is empty (e.g. no query has been

made previously).

Initialize

Description With this method you can configure the timeout

value i.e., 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

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Exfo FTB-500 (Window XP) Manual de usuario Pagina 307