CUE smartCUE Interfaces - Manual (Page 16)

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smartCUE Interfaces | User Manual | Control Ports
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GENERAL I/O
General I/O provides analog input as well as digital output. Each General I/O port can be used either as input
or as output.
Pull-up resistor 680 ohms is connected to +5 VDC and can be switched on and off for each I/O
independently. I/O voltage with pull-up on is approx. +4.3 VDC, because protection diode is connected in
series (0.7 V drop down). Analog input is rated 0 – 20 VDC.
Analog to digital (A/D) converter has 12-bits precision (i.e. 4096 levels). Digital output can switch max. 24
VDC / 80 mA. Output voltage for output switch on is approx. 0.6 V.
Schematic diagram
value CLOSE / OPEN
680 Ohm
value ON / OFF
ON OFF
+5 VDC
A
D
Input / Output Signal
Ground
12 bit
INPUT
OUTPUT
PULLUP
Connector pin out
GENERAL I/O
5-pin 3.5 mm Pin Signal Description
S S G S S
1 2 3 4 G S Signal Input / Output Signal 1 - 4
G GND Common ground for all I/Os