Performance Motion Devices Magellan DK58113, User Manual

Page: 37 / 56

Operation
DK58113 Developer Kit User Manual
37
2
Figure 2-11:
Limit and Home
Input Circuits
2.8.4 AxisIn and AxisOut Signals
The input buffer for the AxisIn signal is shown in Figure 2-12 . This circuit accepts signals in the range of 0 – 24 V
and has TTL compatible, Schmitt trigger thresholds. It has a pull-up to 5V to allow direct interfacing to open collector
sources without the need for an external pull-up resistor and a 13 kHz R-C low pass filter to reject noise.
Figure 2-12:
AxisIn Circuit
The output driver for the AxisOut signal is shown in Figure 2-13 . This circuit can continuously sink over 100 mA and
source 4mA from a pull-up resistor to 5V. The diode in series with the pull-up resistor allows loads powered from up
to 24 VDC to be switched. The FET driver is internally protected from shorts up to 30 V.