X20 system modules • Digital input modules • X20DI4371
964
X20 system User's Manual 3.10
4.13.6.4 Status LEDs
For a description of the various operating modes, see section 2.11.1 "re LEDs".
Image
LED
Color
Status
Description
Off
No power to module
Single flash
RESET mode
Blinking
PREOPERATIONAL mode
r
Green
On
RUN mode
e
Red
Off
Module supply not connected or everything OK
e + r
Red on / Green single flash
Invalid firmware
1 - 4
Green
Input status of the corresponding digital input
4.13.6.5 Pinout
DI 1
+24 VDC
GND
DI 2
+24 VDC
GND
1
X
20
D
I 4
37
1
2
3 4
DI 3
+24 VDC
GND
DI 4
+24 VDC
GND
r
e
4.13.6.6 Connection example
GND
+24 VDC
GND
+24 VDC
DI
Se
ns
or
1
Se
ns
or
2
Se
ns
or
3
Se
ns
or
4
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