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Host-to-device Communications
The ASCII and URL commands listed in the following tables perform the same functions,
but are encoded differently to accommodate the requirements of each port (Telnet or
browser).
DMP128-initiated Messages
The DMP128 initiates messages under specific conditions. No response is required from
the host. The DMP128-initiated messages are listed here (underlined).
© Copyright 2012, Extron Electronics, DMP 128, Vn.nn, 60–1178-01
Day, DD MMM YYYY HH:MM:SS
Vn.nn
is the firmware version number.
The DMP128 sends the boot and copyright messages under the following
circumstances:
• If the DMP128 is off and an RS-232 connection is already set up (the PC is cabled to
the DMP128 and a serial communication program such as HyperTerminal is open),
the connected unit sends these messages via RS-232 when first powered on.
• If the DMP128 is on, it sends the boot and copyright messages when a Telnet
connection to the DMP128 is first opened. The day of the week, date, and time
are shown when the DMP128 is connected via Telnet, but not via RS-232. If using
a Telnet connection, the copyright message, date, and time may be followed by a
password prompt.
Password Information
The “
]
Password:" prompt requires a password (administrator level or user level)
followed by a carriage return. The prompt is repeated if the correct password is not
entered.
If the correct password is entered, the unit responds with "
]
Login Administrator
]
"
or "
]
Login User
]
", depending on the password entered. If passwords are the same
for both administrator and user, the unit will default to administrator privileges.
Using the Command/Response Tables
SIS commands consist of a string (one or more characters per command field). No special
characters are required to begin or end a command sequence. When the DMP128
determines a command is valid, it executes the command and sends a response to
the host device. All responses end with a carriage return and a line feed (CR/LF =
]
),
signaling the end of the response character string.
DMP128 • SIS Programming and Control 116