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Introduction
The purpose of this document is to describe how the external control interface of the device works.
Home Automation System Integration
The Lyngdorf Audio TDAI-3400 is compatible with home automation systems via the RS232 and network
connectors on the rear socket panel. The TDAI-3400's IR and trigger connections can also be programmed
for use in a home automation system.
Control Via Network
Open a TCP connection on port 84 and use the control protocol as described in this document. For control
from a PC, use Telnet, Putty, or similar programs to open the TCP connection.
If you do not know the IP address of the TDAI-3400 on your local network, the TDAI-3400 supports Apple´s
Bonjour Discovery service, which must be on the computer you want to set up the TDAI-3400 with. The
software is built-in as part of the Apple OS X operating system. For Windows operating systems, the
software can be found at
http://www.apple.com/support/bonjour/
The control protocol is announced via bonjour as the service "slactrl".
Pressing the "INFO" button on the remote and toggling through the "Info" of the unit will also display the
current IP address of the unit.
The TDAI-3400 can also be controlled via the network by accessing
http://tdai-3400.local
in your browser.
Control Via Serial Port
The serial port on the TDAI-3400 is wired as a DCE, so for communication with a PC or similar use a
standard straight through cable
The port settings should always be 8 data bits, no parity, one stop bit and no hardware handshake. The
baud rate is 115200 bits per second. All commands and responses are in ASCII form.
When controlling the TDAI-3400 via the serial port, it can wake up even when the standby mode has been
set to "deep sleep." However, the TDAI-3400 will miss the first characters transmitted when in deep sleep,
because it needs to wake up first. To make sure the TDAI-3400 is ready for the command, send the ON-
command a couple of times in succession to guarantee that the command is always received, even if the
unit is in deep sleep
Lyngdorf Audio TDAI-3400 – External control manual
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