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SIS Communication
and Control
The PVS 405D 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 a LAN port
or the front panel USB port (recommended). Control is made using the Extron Simple
Instruction Set (SIS) of commands, or the Product Configuration Software (PCS) program.
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 Switcher Communications
• Commands and Responses
The switcher uses a protocol of 9600 baud, 1 stop bit, no parity, and no
flow control and the rear panel RS‑232 captive screw connector has the pin
assignments as shown at right.
REMOTE
RS-232
Tx Rx G
Host to Switcher 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 PVS 405D determines that a
command is valid, it executes the command and sends a response to the host device.
All responses from the switcher 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).
Switcher-initiated Messages
When a local event such as a front panel selection or adjustment takes place, the
PVS 405D responds by sending a message to the host. No response is required from the
host. Example switcher‑initiated messages are listed here.
• ] © Copyright 2014, Extron Electronics, PVS 405D, Vx.xx, 60‑1235‑01]
• Chn X! ] (where X! is the input number when an input switches).
Copyright Information
] © Copyright 2014, Extron Electronics, PVS 405D, Vx.xx, 60‑1235‑01]
The copyright message is displayed upon connecting to an PVS product via RS‑232.
Vx.xx is the firmware version number. The current date and time are displayed.
PVS 405D • SIS Communication and Control 16