Extron Electronics VSC 150 User Guide - Manual (Page 17)

VSC 150 • Remote Control VSC 150 • Remote Control
Remote Control, cont’d
3-3
The VSC 150 displays the copyright message when it first
powers on. Vx.xx is the firmware version number.
RECONFIG The VSC 150 sends the Reconfig message
when the input source is changed and when changes have
been made to one or more of the settings.
VSC error responses
When the VSC 150 receives a valid SIS command, it
executes the command and sends a response to the host
device. If the VSC 150 is unable to execute the command
because the command is invalid or it contains invalid
parameters, it returns an error response to the host. The
error response codes and their descriptions are as follows:
E10 – Invalid command
E11 – Invalid preset number
E13 – Invalid value (the number is out of range).
Time-out
A delay of 10 or more seconds between command sequence
characters causes a time-out. The command operation is
stopped, and there is no indication that a time-out occurred.
Using the command/response table
The command/response table on the next page lists valid
command ASCII codes, the VSC 150’s responses to the host,
a description of the command’s function or the results of
executing the command, and an example of each command.
Lower case characters are acceptable in the command field
only where indicated.
The ASCII to HEX conversion table below is for use with
the command/response table.
ASCII to HEX Conversion Table
•
Remote Control
3-2
DB9 Pin Locations
Female
5 1
9 6
The VSC 150 can be remotely controlled via a computer or a
control panel attached to the rear panel RS-232 connector.
Alternatively, the VSC 150 can be controlled using the IR
601 infrared remote control. This chapter discusses how to
use each of these options to control the scan converter.
RS-232 Remote Control
The VSC 150 can be controlled by a host computer or other
control device via an RS-232 connection with a protocol of
9600 baud, 1 stop bit, no parity, and no flow control. The
control device (host) can use either Extron’s
Simple Instruction Set (SIS) or the graphical
control program for Windows.
The rear panel RS-232 9-pin D connector has the following
pin assignments:
Pin RS-232 function Description
1 – Not used
2 Tx Transmit data
3 Rx Receive data
4 – Not used
5 Gnd Signal ground
6 – Not used
7 – Not used
8 – Not used
9 – Not used
Host-to-VSC 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 VSC 150 determines that a
command is valid, it executes the command and sends a
response to the host device. All responses from the scan
converter 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.
VSC-initiated messages
When a local event such as a front panel selection or
adjustment takes place, the VSC 150 responds by sending a
message to the host. No response is required from the host.
The VSC-initiated messages are listed here (underlined).
(C) COPYRIGHT 1999, EXTRON ELECTRONICS, VSC 150,
Vx.xx