21
SW HDMI Series • Remote Communication and Control
Remote
Communication
and Control
This section describes remote operation of the SW HDMI switchers. Topics include:
•
Using Simple Instruction Set (SIS) Commands
•
Updating Firmware Using Firmware Loader
Using Simple Instruction Set (SIS) Commands
The SW HDMI can be remotely set up and controlled via Extron SIS commands that are
issued from a host computer or other device, such as a control system. SIS commands
can be issued via RS-232 from the computer serial port to the rear panel Remote port,
or via USB from the computer USB port to the front panel Config port. (See
Wiring for
RS-232 Control
on page 8 or
Connecting to the USB Port
on page 9 to connect to
these ports.)
Host-to-switcher Communications
SIS commands consist of one or more characters per field. No special characters are
required to begin or end a command sequence. You can enter these commands from
your computer using a communication software program such as Extron DataViewer or
HyperTerminal. When the switcher determines that a command is valid, it executes the
command and sends a response to the host device.
Most responses from the SW HDMI to the host computer end 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
When a local event such as a front panel selection or a change in signal status takes
place, the switcher responds by sending a message to the host, indicating what selection
was entered. No response is required from the host.
The following switcher-initiated message is displayed:
(C)
Copyright
20
nn
,
Extron
Electronics
HDMI
Switcher
Series,
V
n
.
nn
,
60-841-
nn
The switcher sends the copyright message when it first powers on.
20
nn
is the year
in which the copyright for the firmware was registered,
V
n.nn
is the firmware version
number, and
60-841-
nn
is the switcher part number.
NOTE:
This message is displayed only at power-up with an RS-232 connection.
