ESA VT130W, Руководство по оборудованию

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CHAPTER 40
Free terminal protocol
405.1200.037.2 - Rel.: 2.21 of 25/02/2008
40-16
Example of
handling Let us suppose we have a VT50 that has to display the text “GOOD
MORNING OPERATOR” centered on the display and, when is
pressed is canceled and replaced by the word “READY” justified top left.
There are various ways of proceeding, each leading to the same result; what
follows is just one example.
Prepare the VT50 for communication by using Free Terminal. To do this,
transfer the appropriate driver (see Page 40-2) and set the various commu-
nication parameters (see Page 40-3). Once the settings have been completed
the following page appears
First check that the VT communicates with the device. Send the following
string.
<ESC>Y<EOT>
If communication has been correctly established, the VT responds with the
following message.
<OK>
At this point the device must interpret the response and control begins.
First cancel the display. Send the following string.
<ESC>C<EOT>
The display is cleared and the cursor goes automatically to the top left cor-
ner with the 0,0 (y,x) co-ordinate.
Position the cursor at co-ordinate 0,5 (y,x). Send the following string.
<ESC>A0005<EOT>
F5
VT-50 TERMINAL Vx.xx
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