PD-1141 Hardware Manual (Rev. 1.04 / 2013-JUL-23)
11
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3.3.2
Multipurpose I/O Connector
An 8pin 2mm pitch single row connector is available for all multipurpose inputs and outputs.
8
1
Pin
Label
Direction
Description
1
GND
Power (GND)
System and signal ground
2
VDD
Power (Supply)
VDD, connected to VDD pin of the power and
RS485 connector
3
OUT_0
Output
Open-drain output (max. 100
mA)
Integrated freewheeling diode to VDD
4
OUT_1
Output
Open-drain output (max. 100
mA)
Integrated freewheeling diode to VDD
5
IN_0
Input
Dedicated analog input,
Input voltage range: 0… +10V
Resolution: 12bit (0… 4095)
6
IN_1
Input
General purpose digital input (+24
V compatible)
Alternate function: left stop switch input
7
IN_2
Input
General purpose digital input (+24
V compatible)
Alternate function: right stop switch input
8
IN_3
Input
General purpose digital input (+24
V compatible)
Alternate function: home switch input
Table 3.4 Multipurpose I/O connector
Note
:
-
All inputs have resistor based voltage input dividers with protection diodes. These resistors
also ensure a valid GND level when left unconnected.
-
For all digital inputs (IN_1, IN_2, IN_3) a 1k pull-up resistor to +5V can be activated. Then these
inputs have a default (unconnected) logic level of 1 and an external switch to GND can be
connected. This might be especially interesting in case these inputs are used as stop and home
switch inputs (alternate function).