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5-22
Chapter
5
PARALLEL I/O INTERF
ACE
2. Ratings
c
CAUTION
See "7. I/O connections" in Chapter 3 for a defi nition of NPN and PNP
specifi cations.
1. Input
■
NPN specifications
Method
DC input (positive common type)
Photocoupler insulation method
Input power
DC 24V±10%, 7mA/point
Response time
20ms Min. (during on/off)
■
PNP specifications
Method
DC input (negative common type)
Photocoupler insulation method
Input power
DC 24V±10%, 7mA/point
Response time
20ms Min. (during on/off)
2. Output
■
NPN specifications
Method
NPN open-collector (negative common type)
Photocoupler insulation method
Load
DC 24V±10%, 100mA/point (resistance load)
Response time
10ms Max.
■
PNP specifications
Method
NPN open emitter (positive common type)
Photocoupler insulation method
Load
DC 24V±10%, 100mA/point (resistance
load)*
1)
Response time
10ms Max.
*
1)
The total load on the same output port (Example: DO20 to
DO27) must be less than 400mA.
2. Ratings
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