xiQ - Technical Manual Version 1.35
48
Output Transfer Characteristic
When Output is in On state - typical transfer characteristic of output is as on following figure:
figure 3-41, digital output transfer characteristics
3.9.4.4.
Digital Output – Wiring
Digital output has an open collector switching transistor with common IO Ground. In most cases a power source for external
device must be provided.
Connecting Digital OUTPUT to a NPN-compatible PLC device input (biased)
Output state
Output switch state
Input state
ON
Sourcing current
Pull up (energized)
OFF
Relaxing
Not energized
figure 3-42, Connecting Digital OUTPUT to a NPN-compatible PLC device input (biased)
Important note:
•
If using this configuration, take into account that Common Ground connection may be biased by power supply for Digital
Input!
•
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
5
10
15
20
25
30
V
OUTPUT
(V)
I
OUTPUT
(mA)
Output Transfer Characteristic (Receptacle)
GND (Common IO Ground)
DIGITAL OUTPUT
Common
PLC Device
Input
MQ Camera
Power Supply
