XIMEA xiQ series Technical Manual page 44

3.8.4.4.3. Connecting Digital OUTPUT to a PNP-compatible device
Output state Output switch state
ON Sinking current
OFF Relaxing
Power Supply
MQ Camera
DIGITAL OUTPUT
GND (Common IO Ground)
figure 3-36, Connecting Digital OUTPUT to a PNP-compatible device
Pull up resistor can be calculated as follows:
Where:
power supply voltage. Must be higher than required input amplitude
V
psu
V required input amplitude
input
I input driving current (corresponding to input amplitude)
input
Remember to use the appropriate resistor power rating
3.8.4.4.4. Output Wiring Example: LED Driving
LED can be driven directly by camera digital output. A series resistor must be used to limit LED current.
MQ Camera
DIGITAL OUTPUT
GND (Common IO Ground)
figure 3-37, LED Driving
LED series resistor can be calculated by the following equation:
Where:
power supply voltage (5V to 24V)
V
psu
V voltage across digital output pins (see.3.8.4.3 Digital Output – Internal schematic)
output
V LED forward voltage (see table below)
led
I LED current
led
Note:
• Remember to use the appropriate resistor power rating
xiQ - Technical Manual Version 1.0
Input state
Not energized
Pull up (energized)
External pull up
PLC Device
Input
Common

V V
 psu input
R
I
input
 
P R ( ) ( V V
psu
R
LED
V V
OUTPUT PSU
V
psu

R
P RES ( )
) * I
input input
Power Supply
 
V V
output led
I
led

I * I * R
led led
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