Simple Instruction Set Control; Host-To-Extender Communications; Extender-Initiated Messages; Error Responses - Extron electronics DTP T HWP 232 D User Manual

Simple Instruction Set Control

The DTP T HWP D and DTP T UWP D family of extenders can be remotely controlled using
SIS commands from a host device such as a computer or control system via its rear panel
Remote RS-232 port (see item
port (see item
The default serial port protocol of the port is as follows:
•
•

Host-to-Extender 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
extender executes the command and sends a response to the host device. All responses
from the extender to the host end with a carriage return and a line feed (CR/LF =
signals the end of the response character string. A string is one or more characters.

Extender-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 extender responds by sending a message to the host.
Examples of the extender-initiated messages are listed below:
©
The extender issues the copyright message when it first powers on.
version number and
In
The extender also sends the In
input number. A

Error Responses

When the extender receives a valid SIS command, it executes the command and sends a
response to the host device. If the extender is unable to execute the command because the
command is invalid or it contains invalid parameters, the extender 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

Timeout

Pauses of 10 seconds or longer between command ASCII characters result in a timeout.
The command operation is aborted with no other indication.
on page 8, and
C
9600 baud
•
No flow control
•
,
Copyright 20yy Extron Electronics DTP T HWP 232 D
-
60 nnnn
All ]
n
in the field indicates no input is selected.
0 n
DTP T HWP/UWP 232/332 D Transmitters • Remote Control
9 and 11) or front panel Configuration (USB)
on pages
C
on page 10).
D
No parity 8 data bits
•
1 stop bit
- is the part number.
nn
message whenever the selected input is changed.
n
), which
]
, . , - -
Vx xx 60 nnnn nn ]
. is the firmware
Vx xx
is the
n
17