User manual

Detailed descriptions of I/O modules | Digital input module UR20-4DI-P
68 1432790000/03/02.2014Manual u-remote
4DI-P
Module status LED
Green: Communication over the system bus
Red: Collective error diagnostic
1.1 Yellow: Input0 active
2.1 Yellow: Input1 active
3.1 Yellow: Input2 active
4.1 Yellow: Input3 active
LEDindicatorsUR20-4DI-P,errormessagesseeChapter13
DI_0
•
•
DI_3
1
2
3
4
1
2
3
4
1
2
3
4
DI_1
GND
24 V DC
FE
DI_0
GND
24 V DC
FE
DI_2
GND
24 V DC
FE
DI_3
GND
24 V DC
FE
Type 3
System
bus
U
SYS
U
IN
U
OUT
µC
24 V DC⎽IN
GND⎽IN
FE
1
2
3
4
UR20 4DI-P
BlockdiagramUR20-4DI-P