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Remote Control
Use Simple Instruction Set (SIS) commands to configure the RAC 104. This section provides
information about using those commands. The following topics are discussed:
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•
•
•
RS-232 Link
The RAC 104 can be controlled remotely via the RS-232 port using the Extron Simple
Instruction Set (SIS). The RS-232 port on the RAC 104 is a 3-pole captive screw connector,
with one pole for transmitting data, one for receiving data, and one for the ground.
The RAC rear panel 3-pole, 3.5 mm, Host RS-232 connector (see
can be connected to the RS-232 serial port output of a host device such as a computer
running the DataViewer utility or a control system.
The default protocol for both ports is as follows:
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•
Host-to-device Communtication
The RAC 104 accepts SIS commands through the RS-232 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 controller response to an SIS
command ends with a carriage return and a line feed (CR/LF =
of the response character string.
RAC-Initiated (Unsolicited) Messages
The following copyright message is initiated by the controller when it is first powered on.
V
x.xx
Boot V1.00,(c) 2003, ? to Enter
(c) Copyright 2003,Extron Electronics,RAC 104, Vx.xx
(for RS-232 connection)
10
RAC 104 • Remote Control
RS-232 Link
Host-to-device Communtication
Using the Command and Response Tables
Command and Response Table for SIS Commands
9600 baud
8-bit
is the firmware version number.
No parity
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•
1 stop bit
figure 2
on page 4)
No flow control
•
]
), which signals the end
]
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