Siemens SIMATIC LOGO! CMR2020 - Page 21

Connectors and LED display
2.3 LEDs to display operation
LOGO! CMR2020 / LOGO! CMR2040
Operating Instructions, 09/2014, C79000-G8976-C356-01
21
LED
Status
Meaning
Flashing
Duplicate IP address detected. Ethernet interface unreacha-
ble.
I1
Input 1
Off
U < 5 V
Lit green
U > 8.5 V
I2
Input 2
Off
U < 5 V
Lit green
U > 8.5 V
Q1
Output 1
Off
No voltage at output
Lit green
Supply voltage at output
Q2
Output 2
Off
No voltage at output
Lit green
Supply voltage at output