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LEDs
The FMod-IPAXESCTRL is provided with a connector for 4 LED (J3). They
give information about the mode (1, 2, 3) of the board and the state (activity
or not) of the axes. Here is the LED's layout:
Board Mode
The different modes define the way the input (trackball and Keyboard) and
output devices (LCD display) interact with the physical system (commands
sent to the motor). See "Axes parameters Panel" in "Java applet" chapter
for more detailed information.
Mode 1 = LED0 on, LED1 off
Mode 2 = LED0 off, LED1 on
Mode 3 = LED0 off, LED1 off
Axis State
The LEDs are especially useful in order to determine the mode on how the
axes are controlled by the trackball (axes 1 and 2). When an axis is found
and is ready to receive data, then its corresponding LED is on; if an axis is
"suspended", its LED is off. It is possible to drive an axis (for ex: axis1)
without modifying the other one (ex: axis2) which has been put in a
"suspended" state with the press of a keyboard button.
Notes:
No LED exists for axis 3 since it cannot be driven by the trackball.
The LEDs display the information in any case, even if the LCD is not
connected.
5V
1k
Board Connector
(one for each led)
0
1
Board Mode
0
0
0
The board drives the lower pin (Cathode /-) of
the LED while the upper one (Anode /+) is
connected to 5V. An onboard 1kOhm resistor is
connected in series to limit the current to
3 mA
~3mA.
Board J3 Connector:
1
Led 0
2
5V
3
Led 1
4
5V
5
Led 2
6
5V
7
Led 3
8
5V
2
3
Axis
1
1
1
resolution mode 1
resolution mode 2
axis 1 ON/OFF
axis 2 ON/OFF
FMod-IPAXESCTRL User Manual v.1.5
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