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90003752(2) [AK-Commands] 10/01
4.4. Command and response telegram timing
For each command telegram of the TBCC the peripheral analyzer sends a response
telegram.
It is not allowed for the TBCC to send new command telegrams before this response
telegram is received.
For most of the command telegrams this response might be sent after some milliseconds.
But for some commands the response telegram might be started to sent 2-3 seconds after
receiving the command telegram. The time starts the moment the peripheral analyzer
receives the ETX character of the command telegram.
It is not assured that the response telegram is sent without any delay between the single
characters but it might be that there are up to 2-3 seconds in between.
4.5. Handling of malfunctions
For the case of a malfunction it might be that the ETX-character of the command telegram
is not received by the peripheral analyzer. Then it will not evaluate the command telegram
and so will not send a response telegram.
In this case it is in the responsibility of the TBCC not to run into an endless loop. It has to
have a timeout of 4-5 seconds to react on this communication failure.
The TBCC may repeat the last command telegram or doing some other exception
handling.