LEDs and connectors
2.2 Power supply
CP 154xSP-1
36
Operating Instructions, 12/2019, C79000-G8976-C426-05
PWR
(green)
RN
(green)
ER
(red)
MT
(yellow)
Meaning
Firmware update running
There is a maintenance request from the CP.
Example:
•
End of the firmware update
LEDs of the bus adapter
Every port of a bus adapter has an LED "LKx" that informs about the connection status with
Ethernet and the frame traffic of the port.
Table 2- 3
Meaning of the LED displays of the bus adapters
LK
(green)
Meaning
No Ethernet connection. Possible causes:
•
No physical connection to the network
•
Port disabled in the configuration
LED flashing test
There is an Ethernet connection between the port and communications partner.
2.2
Power supply
External power supply required
The connector for the external 24 VDC power supply is located on the front of the CP.
Figure 2-1
Power supply of the CP
