EN - English - I
nstruc
tions manual
13
9.4 Messages from keyboard to PC
The DCZ keyboard transmits every event to the PC
and does not expect an acknowledge message.
The events are:
EVENT
MESSAGE
PARAMETERS
Pressing of a
touch key
[K+
val
]
val
: Value of the
key in the lookup
chart
Pressing of a
touch key +
shift
[K+
val:shift
]
val
: Value of the
key in the lookup
chart
shift
: Pressed
"shift" keys (‘1’..’8’)
Release of a
touch key
[K-
val
]
val
: Value of the
key in the lookup
chart
Pressing a
"shift" key
[H+
shift
]
shift
: Number of
"shift" key (‘1’..’8’)
Releasing a
"shift" key
[H-
shift
]
shift
: Number of
"shift" key (‘1’..’8’)
Movement of
the joystick,
[J
±pp±tt±zz
]
±pp
,
±tt
,
±zz
: Pan,
tilt, zoom position
-07..+07
Movement of
the shuttle
[S
±aa
]
±aa
: Rotation angle
-70°..+70°
Movement of
the jog
[D+1]
Clockwise rotation
by one click (10
clicks per turn
angle)
Movement of
the jog
[D-1]
Counter clockwise
rotation by one
click (10 clicks per
turn angle)
Tab. 02
Example: On a default DCZ keyboard, the
ESC
key
is represented by code
13
, the
MONITOR
key by
14
, etc.
If the keyboard is rotated by 180°, the configuration
remains unaltered and there is no change from a PC
application point of view.
By changing the value associated to each key on the
lookup chart, it is possible to redefine its function and
to allow the user to use keys with the same value.
9.2 Typographic conventions
The following typographic conventions are used in
the protocol described below:
• [messages]: Transmitted message
•
variable_parameter
: Variable parameter
inside a message
• ±: Plus or minus sign.
9.3 Sintax of messages
The messages sent to and from the PC consist in
printable characters (from ASCII 32 to ASCII 127
codes, excluding ASCII 91 and 93) which are delimited
by brackets [ and ]:
• [ (ASCII 91) Open square bracket, STX start of
transmission
• Message text of variable length
• [ (ASCII 93) Closed square bracket, STX start of
transmission
Given the type of messages transmitted and the
quality of the USB communication, no checksum
system is foreseen.
Example: When the
ESC
key is pressed (row
1, column 3) the default keyboard will transmit
[K+13]
:
•
[
: Identifies the start of the message
•
K+
: Pressed key
•
13
: Key lookup value (row 1, column 3)
•
]
: Identifies the end of the message.
Summary of Contents for DCZ
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