Epson EMP-S3 Benutzerhandbuch

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List of ESC/VP21 Commands
USB Connection Setup
In order to control the projector using ESC/VP21 commands via a USB 
connection, the following preparations must be carried out.
PROCEDURE
A
Download the USB driver (USB-COM Driver) from the 
EPSON website to your computer.
The URL is as follows.
 
B
Install the downloaded USB driver onto your 
computer.
Read the instructions displayed on the download screen.
C
Change the "Link21L" setting in the "Extended" menu 
to "ON".
D
Turn the projector's power off.
E
Turn off this projector after the confirmation buzzer 
beeps twice.
Once the projector's power has turned back on, communication 
via a USB Connection will then be possible.
If you disconnect the power cable before the 
confirmation buzzer beeps twice, the communication 
port is not changed.