Siemens SIMATIC LOGO! CMR2020 Operating Instructions Manual page 21

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