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Sis communication and control, Host-to-scaler communications, Scaler-initiated messages – Extron Electronics DSC 301 HD User Guide User Manual

Page 26: Copyright information, Scaler-initiated messages copyright information, Communication and control, Section), E available via sis commands (see the, Communication and controls

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SIS Communication

and Control

The DSC 301 HD can be configured and controlled via a host computer or other device
(such as a control system) attached to the rear panel RS-232 connector or the front panel
USB port. Control is made using the Extron Simple Instruction Set (SIS) of commands.
Commands can be entered using a Telnet application such as the Extron DataViewer,
available at

www.extron.com

. See the DataViewer Help file for use.

This section describes SIS communication and control. Topics that are covered include:

Host to Scaler Communications

Commands and Responses

The scaler uses a protocol of 9600 baud, 1 stop bit, no parity, and no flow
control and the rear panel remote port RS-232 captive screw connector has
the pin assignments as shown at right.

Host-to-Scaler Communications

SIS commands consist of one or more characters per field. No special characters are
required to begin or end a command sequence. When the DSC 301 HD determines that a
command is valid, it executes the command and sends a response to the host device.
All responses from the scaler to the host end with a carriage return and a line feed
(CR/LF =

]

), indicating the end of the response character string (one or more

characters).

Scaler-initiated Messages

When a local event such as a front panel selection or adjustment takes place, the
DSC 301 HD scaler responds by sending a message to the host. No response is required
from the host. Example scaler-initiated messages are listed here.

In

X!

All

]

(where

X!

is the input number during an input switch).

Reconfig

]

The DSC 301 HD sends this response when a new signal is detected.

HplgO

X@ ]

The DSC 301 HD sends this response when a hot plug event on

output

X@

is detected.

Copyright Information

]

© Copyright 2013, Extron Electronics, DSC 301 HD, Vx.xx, 60-1253-01

]

The copyright message is displayed upon connecting to the product via USB or RS-232.
Vx.xx is the firmware version number.

RS-232

Tx Rx G

REMOTE

DSC 301 HD • SIS Communication and Control

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