$80$6)0ROAND$80($-)3ERIESs3)3#ONFIGURATIONAND#ONTROL
49
Connection Timeouts
4HE%THERNETLINKTIMESOUTAFTERADESIGNATEDPERIODOFNOCOMMUNICATIONS"YDEFAULT
this timeout value is set to 5 minutes, but the value can be changed (see the
Configure
current port timeout
command in the Command and Response Table for IP-specific SIS
Commands, page 69).
NOTE:
%XTRONRECOMMENDSLEAVINGTHEDEFAULTTIMEOUTATMINUTESANDPERIODICALLY
ISSUINGTHE1UERY
Q
) command to keep the connection active. If there are long
IDLEPERIODS%XTRONRECOMMENDSDISCONNECTINGANDREOPENINGTHECONNECTION
when another command must be sent.
Number of Connections
A DXP switcher can have up to 200 simultaneous TCP connections, including all http and
4ELNETCONNECTIONS7HENTHECONNECTIONLIMITISREACHEDTHESWITCHERACCEPTSNONEW
connections until some have been closed. No error message or indication is given that
the connection limit has been reached. To maximize performance, keep the number of
connections low and close unnecessary sockets.
Verbose Mode
The connection to a DXP switcher can be used to monitor for changes that
occur on the switcher, such as front panel operations and SIS commands from
other connections or a serial port. To receive change notices from the switcher,
you must enable verbose mode 1 or 3 (see the
Set verbose mode
command
in the Command and Response Table for IP-specific SIS Commands, page 69). In verbose
mode 1 or 3, changes are reported in messages that resemble SIS command responses.
Host-to-Switcher Instructions
SIS commands consist of one or more characters per command field. They do not require
ANYSPECIALCHARACTERSTOBEGINORENDTHECOMMANDCHARACTERSEQUENCE%ACHSWITCHER
response to an SIS command ends with a carriage return and a line feed (CR/LF =
]
),
which signals the end of the response character string. A string is one or more characters.
Switcher-initiated Messages
7HENALOCALEVENTSUCHASAFRONTPANELOPERATIONOCCURSTHESWITCHERRESPONDS
by sending a message to the host. The switcher-initiated messages are listed below
UNDERLINED )NTHESEMESSAGES6
n.nn
is the firmware version number and 60-
nnnn
-01 is
the DXP part number.
With an RS-232 or RS-422 connection:
(c)
Copyright
2011,
Extron
Electronics
DXP
DVI-HDMI,
V
n.nn
,
60-
nnnn
-01
]
The switcher initiates the copyright message if it is powered on while connected to the
computer.
With an Ethernet connection:
(c)
Copyright
2011,
Extron
Electronics
DXP
DVI-HDMI,
V
n.nn
,
60-
nnnn
-01
]
Ddd
,
DD
Mmm
YYYY
HH
:
MM
:
SS
The switcher initiates the copyright message when a connection is established via Internet
protocol (IP).
