PTU-D46 User’s Manual (v2.14.0) PTU OPTIONS
page 27
Related Topics
• To communicate with an expansion serial port channel : See Section 6.1.1
6.1.3 Attaching a Mouse/Trackball to an Expanded Serial Port
Description
A mouse or trackball can be connected to one of the expanded serial ports to
allow direct user control of pan-tilt position without requiring an external
host computer. When a host computer and mouse/trackball are both attached
and enabled, the most recent pan-tilt movement command is processed. The
host computer can control when the mouse/trackball is enabled, and the host
can query the pan-tilt position while the pan-tilt is actively being controlled
by the mouse/trackball.
Any Microsoft format compatible mouse or trackball can be used.
These devices default the communications to be 1200 baud, 7 bits per
character, no parity and hardware handshaking (which powers the device).
The default is for mouse/trackball control is enabled for CHA. If the
mouse/trackball is enabled for both CHA/CHB expansion ports, only the
CHA port will be used to effect pan-tilt control. A Default Save (see Section
4.5.2) will restore this state at power-up. Whenever expansion port
communications are modified using the commands in Section 6.1.2, mouse/
trackball control is disabled; the command in this section must be used to
reenable mouse/trackball control.
Syntax
@A(M)<delim>
@B(M)<delim>
where A and B indicate RS232C expansion port CHA and CHB. @A(M) is
the system default.
Example
PH * Pan in LOW hold power mode
@A(M) *
DS *
Configures the pan-tilt controller to look for a mouse/trackball on the CHA
expansion port. After power up,
V * Pan-Tilt Controller v2.12.1d1(C14/EM), (C)2003 Directed Perception, Inc., All Rights Reserved
where “/EM” indicates the presence of the EIO option and the detection of a
Mouse/trackball.
Related Topics
• To change expansion serial port communications : See Section 6.1.2
6.1.4 Expansion Analog Joystick Control Port and Pin-Out
The PTUC-EIO provides an analog joystick control port using a DB15 female receptacle.
Directed Perception offers an analog joystick for use with this EIO port (model PT-EIO-JOY-
DB).
A digital mouse/trackball using the EIO serial ports, described above, is superior to analog
voltage controls, though an analog voltage control option is provided for those applications in
which voltage control is required. The wiring diagram for the analog voltage control port is shown
in Figure 5. X controls the pan axis and Y controls the tilt axis. X=0VDC is maximum pan left,
and X=5VDC is maximum pan right. Similarly, Y=0 is maximum tilt down, and Y=5VDC is
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