Datasheet

PD20-1-1210 Hardware Manual • Hardware Version V1.10 | Document Revision V1.20 • 2019-APR-03
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7 I/Os
The PD20-1-1210 offers one digital input which is part of the power supply input, RS485 serial interface
and digital input connector.
7.1 Digital input IN0
The PD20-1-1210 offers one digital input IN0 which accept signals between 0 and 30V with voltages above
approx. 4.6V recognized as logical ’1’ and below 2V as logical ’0’. This input maybe used either as general
purpose digital input IN0, end switch input (connected to motion controller) for left or right stop switch
(STOP_L or STOP_R) or as HOME switch input (for initial homing / reference search).
+
3
.
3
V
HOME
(
IN
0
,
STOP
_
L
,
STOP
_
R
)
REFL
/
REFR
(
TMC
2130
)
+
microcontroller
10
k
10
k
100
nF
GND
GND
GND
Figure 5: Digital input IN0 - simplified schematic extract
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