Chapter 10 : Rs-232 Programmer's Guide - Analog way GRAPHIC SWITCHER II GSW2811R Manuel Utilisateur

Chapter 10 : RS-232 PROGRAMMER'S GUIDE

10-1. INTRODUCTION
If you need to use your own Control Software from a PC, or WORKSTATION with an RS-232 port, the GRAPHIC
™
SWITCHER II allows communicating through an ASCII code protocol.
The GRAPHIC SWITCHER II
legal commands. There is no starting/ending in a command string.
A command can be 1 or 2 characters typed on a keyboard and does not require any special characters before or after it.
(it is not necessary to press "ENTER" on the keyboard). A command can be preceded by a value (see chapter 10-2.
COMMANDS STRUCTURE).
When the GRAPHIC SWITCHER II
the status of all the parameters that have changed due to this command from the control device.
For example: When you pre-select an input the GRAPHIC SWITCHER II
selected and the status of all its parameters (input standard, image adjustment,...)
If the command cannot be executed (value out of range, no signal on the selected input), the GRAPHIC SWITCHER
™
II just send back the current status of the corresponding parameters.
If the command is invalid, an error response will be returned to the controlling device. All responses sent to the
controlling device end with a carriage return <CR> and a line feed <LF> signaling the end of the response character
string. (see chapter 10-3. ERROR RESPONSES).
10-2. COMMANDS STRUCTURE
Commands are usually composed of a numerical value followed by the command characters (1 or 2). The characters
used without any numerical value return the current setting of the command.
COMMAND structure = VALUE (optional) + CHARACTER(S)
Examples:
COMMAND
VALUE
none fm
10 V
10-3. ERROR RESPONSES
When the GRAPHIC SWITCHER II
error response:
COMMAND
VALUE
none BB
70260 V
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™
treats any character received on its RS-232 as a possible command but, it only accepts
™
receives a valid command, it will execute the command. Then it will send back
CHARACTER(S)
OSYN0
VP10
™
receives from the controlling device an invalid command or value, it returns an
CHARACTER(S)
E10
E13
RESPONSE
Read the Sync type of the MAIN output.
Set Vertical position to 10.
RESPONSE
Invalid command.
Invalid value.
GRAPHIC SWITCHER II™
™
indicates the input that you have pre-
DESCRIPTION
DESCRIPTION