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Establishing a connection, Number of connections, Host-to-switcher instructions – Extron Electronics Matrix 12800 Series User Guide User Manual

Page 69: Host-to-switcher instructions, Preliminar y, Programming guide, cont’d

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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.