Selected sis commands, Establishing a network (ethernet) connection, Connection timeouts – Extron Electronics MAV Plus Series Setup Guide User Manual

Page 15: Number of connections, Verbose mode, Host-to-switcher instructions, Chapter four • remote control, Establishing a network (ethernet) connection -2, Remote control

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4-2

Refer also to the CrossPoint 450 Plus / CrossPoint Ultra / MAV Plus User’s Manual at www.extron.com.

4-3

Refer also to the CrossPoint 450 Plus / CrossPoint Ultra / MAV Plus User’s Manual at www.extron.com.

Selected SIS Commands

The switchers have Simple Instruction Set (SIS

) commands that

you can use for operation and configuration. You can run these

commands from a PC connected to either of the switcher’s serial

ports or the Ethernet port. See

h

,

i

, and

l

, on pages 2-6 and

2-7, for connection information.

Establishing a network (Ethernet) connection

Establish a network connection as follows:
1

.

Open a TCP socket to port 23 using the switcher’s IP

address.

N

The factory default IP address is 192.168.254.254.

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 now

ready to accept SIS commands.

N

If the switcher is password-protected, a

password

prompt appears.

2

.

If the switcher is password protected, enter the appropriate

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.

Connection timeouts

The Ethernet link times out and disconnects after a designated

period of time of no communications. By default, this timeout

value is set to five minutes but the value can be changed. See

the Set Connection Timeout command on page 4-8.

N

Extron recommends leaving the default timeout at five

minutes and periodically issuing the Query (Q) command

to keep the connection active or disconnecting the socket

and reopening the connection when necessary.

Number of connections

A switcher 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 your switcher, the number of

connections should stay low and unnecessary open sockets

should be closed.

Verbose mode

Telnet connections to a switcher can be used to monitor

for changes that occur on the switcher, such as front panel

operations and SIS commands from other Telnet sockets or a

serial port. For a Telnet session to receive change notices from

the switcher, the Telnet session must be in verbose mode 3. See

the Verbose Mode command on page 4-8. In verbose mode 3,

the Telnet socket reports changes in messages that resemble SIS

command responses.

Host-to-switcher instructions

The switcher accepts SIS (Simple Instruction Set) commands

through either serial port. 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.

N

The table that begins on the next page is a partial list

of SIS commands. For a complete listing, refer to the

CrossPoint 450 Plus / CrossPoint Ultra / MAV Plus

Switcher Manual, chapter 4, “Programmer’s Guide”.

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