inout RePlay 01, Руководство пользователя

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Replay User Manual v.
1.2
Page 36
10.9 Control codes
The control codes are characters (they belong to the first 32 ASCII characters and cannot
be printed out) which define the kind of information contained in the pack following them.
The control codes used are those which appear on the following table.
Replay initialises the transmission sequence when it receives the character
ENQ.
Mnemonic Code Description
STX 02H
Start TeXt. Beginning of transmission of reply pack.
ETX 03H End TeXt. End of reply pack.
ENQ 05H EnQuiry. Beginning of pack addressed to Replay ( or # for RS232).
ACK 06H
ACKnowledge. Beginning of reply pack: all OK!
LF 0AH Line Feed. End of line code.
CR 0DH Carriage Return.
NAK 15H
Not AcKnowledge. Beginning of pack with error code.
N.B. The codes are expressed in hexadecimal.
10.10 Address (ADD)
Not used for RS232, set value “00”.
10.11 Command (CMD)
This is used to define the operation to be carried out (for example PLAY, reading the state
or setting of the volume). The commands are defined in ASCII characters and consist of
2 characters.
In the following sections of this chapter, we provide the list of commands and every detail
about each command.