Telycam NDI HX3, Руководство пользователя

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VISCA over IP
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delivery and resent in the application.
Generally, when the controller sends a command to peripheral equipment, the
controller will wait for the return message and then send the next command, we
can detect and confirm if the peripheral equipment receives the commands from
the return message’s lag time. If the controller shows it is over time, it is regarded
as error transmission.
If the controller shows it is over time, resend the commands to check the
peripheral’s status, resent command sequence number is the same as the last
command, the following chart list the received message and status after resending
the commands.
Lost
message
Received
message for
retransmission
Status after
retransmission
Correspondence after
retransmission
Command ACK message Command is performed
by retransmission.
Continue processing.
Completion
message
For the
command
ERROR(Abnormality
in the sequence
number.)
Command has been
performed.
If only the ACK
message is lost, the
completion message
returns.
If the result by the completion
message is needed, retransmit by
updating the sequence number.
Completion
message for the
command
ERROR(Abnormality
in the sequence
number.)
Command has been
performed.
If the result by the completion
message is needed, retransmit by
updating the sequence number.
Inquiry Reply message Inquiry is performed by
retransmission.
Continue processing.
Reply message
for the inquiry
ERROR(Abnormality
in the sequence
number.)
Inquiry has been
performed.
If the result by the reply message
is needed, retransmit by updating
the sequence number.
Error message Error message Command is not
performed. If the error
cause eliminates,
normal reply is
return(ACK, reply
message)
Eliminate the error cause. If
normal reply returns, continue
processing.
Inquiry of the
VISCA device
setting
command
Reply message of the
VISCA device setting
command
Inquiry has been
performed by
retransmission.
Continue processing.
Reply message
of the
VISCA device
setting
command
ERROR(Abnormality
in the sequence
number.)
Inquiry has been
performed.
If the result by the reply message
is needed, retransmit by updating
the sequence number.