Programmer’s Guide, cont’d
SMX System Multimatrix Switcher • Programmer’s Guide
4-2
Programmer’s Guide
The SMX switcher can be configured and operated using the Extron Simple
Instruction Set (SIS
™
) of commands. These commands can be run from a PC
connected to either of the switcher’s serial ports or the Ethernet port.
RS-232/RS-422 Link
The SMX has two ports (one rear and one front panel) that can be used for serial
control. Both ports enable use of SIS commands and the Windows-based control
software. The default protocol for these ports are: 9600 baud, 1 stop bit, no parity,
no flow control, 8-bit.
for connection details.
Ethernet (LAN) Port
The rear panel Ethernet connector on the unit can be connected to an Ethernet
LAN or WAN. Communications between the unit and the controlling device is via
telnet (a TCP socket using port 23). The TCP port can be changed if necessary. This
connection makes SIS control of the SMX possible using a computer connected to
the same LAN or WAN. The SIS commands and behavior of the unit is identical to
that when communicating to it via RS-232.
Ethernet connection
The Ethernet cable can be terminated as a straight-through cable or a crossover
cable and must be properly terminated for your application.
Default IP addresses
To access the SMX switcher via the Ethernet port, you need the Extron IP address,
and may need the subnet mask and the gateway address. If the IP address has
been changed to an address comprised of words and characters, the actual numeric
IP address can be determined using the ping (ICMP) utility (
, for more details). The factory-specified defaults are:
IP address: 192.168.254.254, Subnet mask: 255.255.0.0, Gateway address: 0.0.0.0
Establishing a connection
Establish a network connection to the switcher as follows:
1
.
Open a TCP socket to port 23 using the switcher’s IP address.
N
If the local system administrators have not changed the value, the factory-
specified default, 192.168.254.254, is the correct value for this field.
The switcher responds with a copyright message including the date, the name
of the product, firmware version, part number, and the current date/time.
N
If the switcher is not password-protected, the device is ready to accept SIS
commands immediately after it sends the copyright message.
N
If the switcher is password-protected, a
password
prompt appears below the
copyright message.
2
.
If the switcher is password protected, enter the appropriate administrator or
user password.
If the password is accepted, the switcher responds with
Login User
or
Login Administrator
.
If the password is not accepted, the
Password
prompt reappears.
Rear panel RS-232/RS-422 port
The rear panel 9-pin D female connector labeled Remote RS232/RS422
(figure 4-1) can be connected to the RS-232 or RS-422 serial port of a host
device such as a computer running the HyperTerminal utility, an RS-232
capable PDA, or
a control system. This connection makes software control of the switcher
possible.
Figure 4–1 — Remote connector pin assignments
Front panel RS-232 port
The front panel TRS connector labeled Config can be connected to a host
device for serial RS-232 control only. The optional 2.5 mm cable (Extron
part
#70-335-01
)
can be used to connect the SMX to the host. The figure below shows the
pin assignments for this cable.
Figure 4–2 — 2.5 mm connector cable for the configuration
port
