Lightware HDMI-TPS-RX220AK, Руководство пользователя, Страница: 25 / 118

4. Device Concept HDMI-TPS-RX220AK – User's Manual 25
Applied firmware package: v1.4.0 | LDC software: v2.4.0b3
Command Injection Mode
Block diagram of the serial interface in command injection mode
In this mode, the receiver works as an RS-232 bidirectional converter. The TPS signal is converted to RS-232
data and vice versa. TCP/IP port numbers are defined for the serial ports (TPS and local) for this purpose.
E.g. the default Command Injection port number of the local RS -232 port is 8001. If a command is coming
from the TPS interface which addresses to the port no. 8001, it will be transmitted to the Tx pin of the
local RS-232 port. That works in the opposite direction of course and the method is the same on the serial
interface of the TPS port as well.
RS-232 Signal Transmission – Example
The Concept
The System controller can send commands to the receiver through the TPS transmitter and is able to remote
control the projector via RS-232.
Settings
▪
System controller
: wireless IP connection to the same Ethernet as the transmitter is connected to. Use
a dedicated software tool (e.g. a terminal) which is suitable for sending commands via TCP/IP to a
certain IP:port address.
▪
Transmitter
: set the RS-232 mode to Command Injection on TPS output port. Set the further parameters
(Baud rate, Data bits, etc.) in accordance with the specifications of the projector. The transmitter will
transmit the RS-232 data toward the receiver.
▪
Receiver
: set the RS-232 mode to Pass-through on RS-232 port.
▪
Projector
: note the RS-232 port setting that is specified by the Manufacturer. Connect a suitable serial
cable with the proper wiring.
4.6.2. RS-232 Recognizer
RS-232 Recognizer Example
When the
HDMI-TPS-RX220AK
has an active video signal, the receiver login the VC codec automatically.
Steps and Settings
Process Settings
When signal presents on any HDMI input, the
extender sends a message: '
ping
'.
This condition and the action is set in Event manager.

The serial communication is scanned continuously by the
recognizer in the extender and gets the '
Login name
' string.
Video codec sends a message: '
Login name:
'.

When '
Login name:
' is detected in the string, the
extender sends a message: '
Admin
'.
This condition and the action is set in Event manager.
 The serial communication is scanned continuously by
the recognizer in the extender and gets the '
Password
'
string.
Video codec sends a message: '
Password:
'.

When '
Password:
' is detected in the string, the
extender sends a message: '
Admin
'.
This condition and the action is set in Event manager.

Login is established, Video codec is ready to use.
First, configure the recognizer for the serial communication, after that, set the events in the Event Manager (for
more details see the Event Manager section). The RS-232 recognizer settings has to be done with Lightware
Device Controller Software (see the Message Recognizer section) or with LW3 protocol commands (see the
RS-232 Recognizer section).
Settings in the Event manager
▪
E1.
When the signal is present on O1 port of the HDMI-TPS-RX220AK, it sends a message
'PING'
on P1
port of RS-232 to the VC codec. For more details see Message Sending via RS-232 Serial Port section.
▪
E2
. Set a condition where '
Login name:
' is the recognized RS-232 message. Action is sending serial
message ('Admin') on the P1 port to the VC codec.
▪
E3
. Set a condition where '
Password:
' is the recognized RS-232 message. Action is sending serial
message ('Admin') on the P1 port to the VC codec.
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