Name: Extron electronics SMP 300 Series
Brand: Extron electronics
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SMP 300 Series • Remote Communication and Control 108

Connection Timeouts

The Ethernet link times out after a designated period of time with no communication. By

default, this timeout value is 5 minutes, but the value can be changed.

NOTE: Extron recommends leaving the default timeout at 5 minutes and periodically

issuing the Query (Q) command to keep the connection active. If there are long idle

periods, disconnect the socket and reopen the connection when another command

must be sent.

Verbose Mode

Telnet connections can be used to monitor for changes that occur, such as SIS commands

from other Telnet sockets or serial port changes. For a Telnet session to receive change

notices, the Telnet session must be in verbose mode 1 or 3. In verbose mode 1 or 3, the

Telnet socket reports changes in messages that resemble SIS command responses. Front

panel changes are also sent to users who are in verbose mode.

Host-to-device Communications

SIS commands consist of one or more characters per command field. They do not require

special characters to begin or end the command sequence. Each 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.

NOTE: SSH connections may add an extra line feed in the final terminator SIS

responses, for example, standard is

X1!]

and SSH is

X1!}]

SMP300 Series-initiated Messages

The SMP300 Series initiates messages under specific conditions. No response is required

from the host. The SMP300 Series initiated messages are listed here.

Day, DD MMM YYYY HH:MM:SS]

60– 1324-02]

Day, DD MMM YYYY HH:MM:SS]

n.nn

, 60–1634-11]

Day, DD MMM YYYY HH:MM:SS]

n.nn

60–1634-12]

Day, DD MMM YYYY HH:MM:SS]

n.nn

is the firmware version number.

Extron electronics SMP 300 Series User Manual

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