DTP2 T 202 FB • Remote Control
21
Simple Instruction Set Control
The Remote RS-232 port or the Configuration (USB) port (or both) can be connected
to a host device such as a computer running the Extron DataViewer utility or a control system.
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 character sequence. When a command is valid, the
switcher 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 =
]
), which
signals the end of the response character string. A string is one or more characters.
Switcher-Initiated Messages
When a local event occurs, such as a front panel operation, loss or restoration of an input
signal, or an error condition, the switcher responds by sending a message to the host. The
switcher-initiated sign-on message is shown below:
©
Copyright
20
yy
,
Extron
Electronics
DTP
R
202
FB
,
V
x
.
xx
,
60
-
nnnn
-
nn
]
The transmitting receiver issues the copyright message when it first powers on.
V
x
.
xx
is the
firmware version number and
60
-
nnnn
-
nn
is the part number.
Switcher Error Responses
When the switcher receives a valid SIS command, it executes the command and sends a
response to the host device. If the switcher is unable to execute the command because the
command is invalid or it contains invalid parameters, the switcher returns an error response
to the host. The error response codes are:
E01
— Invalid input channel number (out of range)
E06
— Invalid channel change
E10
— Invalid command
E13
— Invalid parameter
E14
— Not valid for this configuration
E17
— Invalid command for signal type
Timeout
Pauses of 10 seconds or longer between command ASCII characters result in a timeout.
The command operation is aborted with no other indication.
Using the Command and Response Table
X`
s) are used
throughout the table to represent variables in the command and response fields. Command
and response examples are shown throughout the table. The ASCII to HEX conversion table
on
is for use with the command and response table.
Summary of Contents for DTP2 T 202 FB
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