1Control Interface Description Document for the Nuvo E6D Main UnitRevision BNovember 26, 2003DB9M PORT PINOUTS: Nuvo Transmit to System Controller on pin 2.Nuvo Receive from System Controller on pin 3.Ground on pin 5.SERIAL PORT PARAMETERS: RS232, RTS/CTS or software flow control (XON/XOFF) NOTrequired, 9600 baud, 8N1 protocol.RULES OF PROTOCOL:(1) For alpha ASCII characters, always use UPPER CASE. In this document, actualcharacters in a string are presented in BOLD type.(2) All numerical fields are coded as ASCII digit characters.(3) Each Command string is STARTED with an ASCII “*” character and terminated by a character (0D hexadecimal). Each response string issued by the E6D will STARTwith an ASCII “#” and be terminated with a character (0D hexadecimal).(4) If a command has an error in it (does not adhere to exact command syntax), the E6D willrespond with a “#?” string.(5) Whenever queuing multiple commands to the E6D, the host program should pause for 50milliseconds between commands to prevent buffer overruns.NUVO POWER-ON STATE:(1) Each zone is OFF until ON command is received.(2) Each zone’s ZoneSet status will be as set by the local keypad DIP switchesIf no keypad is connected with a given zone address, then ZoneSet will default to:A. OR0 (No override)B. BASS+0 (Bass FLAT)C. TREB+0 (Treble FLAT)D. GRP0 (SOURCE GROUPING OFF)E. VRST1 (VOLUME RESET TO –50 dB ON)If these zone settings are overridden by the commands which follow in this document,the overridden values will reset to the default values above upon cycling power on theMain Unit.(3) For the first four seconds after power-on, a series of non-control related characters will beissued at a wide range of baud rates. These are necessary queries to a program thatmay be running on a connected PC for the purpose of firmware field upgrades. Theyshould be ignored by the host control system.NON-VOLATILE COMMANDS AND ASSOCIATED RESPONSES With the exception ofcommands associated with setting the IR carrier frequency, the effect of all commands is non-permanent; i.e. when power is cycled on the main unit, it will return to default values. Thecommands that are an exception to this rule follow in this section.*********************************************************************************COMMAND: *IRSETSR – Reads status of SOURCE IR carrier frequency settings.RESPONSE: #IRSET:aa,bb,cc,dd,ee,ff where:aa = IR carrier frequency of SOURCE 1 ("38" or "56")bb = carrier frequency of SOURCE 2 ("38" or "56")cc = carrier frequency of SOURCE 3 ("38" or "56")dd = carrier frequency of SOURCE 4 ("38" or "56")ee = carrier frequency of SOURCE 5 ("38" or "56")ff = carrier frequency of SOURCE 6 ("38" or "56")
