Extron electronics Matrix 12800 Audio, Руководство пользователя

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Programming Guide, cont’d
Matrix 12800 Switchers • Programming Guide
4-4
PRELIMINAR
Y
Establishing a connection
Establish a network connection to BME 0 as follows:
1 . Open a TCP socket to port 23 using the IP address of the BME.
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 BME responds with a copyright message including the date, the name of
the product, firmware version, part number, and the current date and time.
N If the BME is not password-protected, the device is ready to accept SIS
commands immediately after it sends the copyright message.
N If the BME is password-protected, a password prompt appears below the
copyright message.
2 . If the BME is password protected, enter the appropriate administrator or user
password.
If the password is accepted, the BME responds with Login User or Login
Administrator .
If the password is not accepted, the Password prompt reappears.
Number of connections
The BME can have up to 200 simultaneous TCP connections, including all http
sockets and Telnet connections. When the connection limit is reached, the switcher
accepts no new connections until some have been closed. No error message
or indication is given that the connection limit has been reached. To maximize
performance of an IP Link device, the number of connections should stay low and
unnecessary open sockets should be closed.
Host-to-Switcher Instructions
The switcher accepts commands through the either of the RS-232/RS-422 ports or
the Ethernet port of BME 0. SIS commands consist of one or more characters per
command field. They do not require any special characters to begin or end the
command character sequence. Each switcher 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.