Televic Plixus AE-R, Руководство по установке, Страница: 137 / 162

Parameter Description
Camera protocol Select the protocol you want to use. Two protocols are available: TLVCAM 1
and TLVCAM 2. These are the most commonly used camera protocols that are
also provided with CoCon. For more information on camera protocols see the
appendix.
Network protocol Both TCP/IP and UDP are provided.
Port This is the port on the client where the camera protocol is either sent to (UDP)
or where the third party client has to listen to on the Plixus engine (TCP)
IP address When you select UDP you need to specify the IP address of the destination
(third-party).
COMMANDS FOR TLVCAM1 PROTOCOL
All commands sent for this protocol start with a ‘%’ sign. The last character is a character that states the
end of the transmission. Just before the end of transmission character, there are four characters within the
command sent to the camera control which account for the CRC checksum. The CRC checksum is in
uppercase hexadecimal form while all other numbers are in decimal form.
The protocol is described as follows: STX ‘%’ data CRC ETX with:
STX = start transmit char (0x25 = ‘%’)
ETX = end transmit char (0x0D)
CRC = 16 bit sum of the ASCII characters between STX and CRC
All commands sent by the protocol, need to be acknowledged by the camera system! For UDP connection
this is not necessary. The protocol will retransmit the command up to 3 times if no acknowledge is received.
The acknowledge frame is 1byte long and holds the value 0x06.
We will adopt a certain notation to explain the messages sent. All separate entities in a message are
represented between curly brackets. If the contents of such an entity is also between quotes (‘ ‘) then this
means that this is a literal string. Otherwise it describes the logical entity. A logical entity will also contain a
number between brackets. This number states how many characters the entity will exist of. If the subtext 1+
is attached to the entity between curly brackets, then this means that one or more occurrences of this entity
may occur.
Whenever a microphone of a delegate or the microphone of the president is activated, then a command is
sent to the camera control. Whenever an active microphone is deactivated, another command is sent to the
camera control.
The microphone of the president is activated: {STX}{‘P’}{Microphone number (4)} {CRC (4)}
{ETX}
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