Configuration of the CPU 410
3.3 Status and error displays
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
43
IFM1F and IFM2F LEDs
The IFM1F and IFM2F LEDs indicate errors on the first or second synchronization module.
Table 3- 6
Possible states of the IFM1F and IFM2F LEDs
LED
Meaning
IFM1F
IFM2F
Lit
Irrelevant
An error was detected on synchronization module 1.
Irrelevant
Lit
An error was detected on synchronization module 2
LINK and RX/TX LEDs
The LINK and RX/TX LEDs indicate the current state of the PROFINET IO interfaces.
Table 3- 7
Possible states of the LINK and RX/TX LEDs
LED
Meaning
LINK
RX/TX
Lit
Irrelevant
Connection at the PROFINET IO interface is active
Irrelevant
Flashes
6 Hz
Receiving or sending data at the PROFINET IO interface.
Note
The LINK and RX/TX LEDs are located directly next to the sockets of the PROFINET IO
interfaces. They are not labeled.
REDF LED
The REDF LED indicates specific system states and redundancy errors.
Table 3- 8
Possible states of the REDF LED
REDF LED
System state
Basic requirements
Flashes
0.5 Hz
Link-up
-
Flashes
2 Hz
Update
-