5
Serial Communication
Control Port (RS-232)
The MH4-HD can send and receive serial commands via RS-232. The the port
may be set for Null or Straight using the switch located beside the RS-232 port.
The port is a modular RJ-45 jack; adapter cables are available for 3.5mm or DB-9
serial ports.
Control Bus (RS-485)
The RS-485 control bus allows the MH4-HD to interact with devices such as the
Audio Authority TouchSelect panels or the 1895 Visual Volume knob. The MH4-HD
can also control switch modules or amplifiers that are linked via the Control Bus.
The MH4-HD is unit ID 0, all on-board push-button positions respond to commands
addressed to ID 0. All commands are echoed on the RS-232 control port and
RS-485 control bus, regardless of ID.
External Settings (RS-232)
Baud rate may be changed via BrightAuthor.
Default Baud Rate
115200
Data Bits
8
Parity
None
Stop Bits
1
Changing the Baud Rate (RS-232)
In BrightAuthor, select the proper Baud rate to communicate to external serial
devices. The MH4-HD is always ID 0.
STRUCTURE
EXAMPLE
RESULT
[BAUD#_#]
[BAUD0_9600]
MH4-HD ID 0 BAUD RATE SET TO 9600
[BAUD#_#]
[BAUD0_115200]
MH4-HD ID 0 BAUD RATE SET TO 115200
[BAUD#_#]
[BAUD0_19200]
MH4-HD ID 0 BAUD RATE SET TO 19200
[BAUD#_#]
[BAUD0_57600]
MH4-HD ID 0 BAUD RATE SET TO 57600
[BAUD#_#]
[BAUD0_38400]
MH4-HD ID 0 BAUD RATE SET TO 38400
Internal Settings
Port
0
Baud Rate
115200
Data Bits
8
Parity
None
Stop Bits
1
Protocol
ASCII
Send EOL
CR
Receive EOL
CR
Control Bus Settings (RS-485)
Baud Rate
57600
Protocol
Control Bus (RS485)
Содержание BrightSign MH4-HD
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