Redbox RB-DMX4 User Handbook
11
SERIAL PORT C
ONTR
OL
6
SERIAL PORT CONTROL
Serial Port Control
The Serial Port allows the RB-DMX4 to be controlled and updated from a PC via a pin-to-
pin serial cable, using the Sonifex Serial Control Interface (SCI) software. This software is
available as a free download from the Sonifex website at www.sonifex.co.uk/sci.
Default Settings for the Serial Port
Baud Rate:
19200
Data Bits:
8
Stop Bits:
1
Parity:
Even
Handshaking:
XON/XOFF
Fig 6-1: Serial Port Default Settings
Serial Interface Commands and Responses
Most of the commands follow the same structure: a 3 letter command followed by a colon,
followed by a parameter (if any) and terminated by Carriage Return with optional Line
Feed. A Line Feed character may be sent but it will be ignored by the RB-DMX4. Commands
are not case sensitive.
Responses are CR & LF terminated.
After the RB-DMX4 has been powered-up, an initialisation string is sent “Initialising DMX4”.
Following are the commands and the expected responses:
Command
Description
Response
Bnn:
Baudrate Change
-ACK:
nn is the new baudrate value where:
nn = 11 = 115200kbps
nn = 57 = 57600kbps
nn = 38 = 38400kbps
nn = 19 = 19200kbps
nn = 96 = 9600kbps
DWN:
Initiates a Firmware Upgrade
-ACK: