Status and error messages of the Compact FF Link (not redundant)
LEDs
Meaning
Solution
SF
BF FF ACT FF BF DP ACT DP
On
Off
Off
Off
Off
Off
Off
● No voltage is applied to the
Compact FF Link.
● Applied supply voltage is not within
permissible range.
● Hardware fault of the
Compact FF Link.
● Switch on the
power supply
module.
● Check the voltage
applied
● Replace the
Compact FF Link.
Off
Off
Off
Off
Off
On
Single Mode Compact FF Link ( Good
status)
The Compact FF Link is exchanging da‐
ta with the DP master and the lower-lev‐
el FF devices.
On
On
On
On
On
On
Compact FF Link is starting up.
All LEDs are switched on for approx.
1 s.
On
Flashes
Off
Off
*
On
After startup:
Compact FF Link is operating. Status
after startup.
The Physical Device (PD) tag has been
changed for an FF device on the FF
segment.
At least one FF device has an incorrect
Physical Device (PD) tag.
After restoration of factory settings:
The Compact FF Link is connected to
the DP master via the DP cable.
Evaluate the diagnos‐
tics of the Compact
FF Link and check
the reported FF devi‐
ces.
On
Off
Off
On
Off
Off
At restoration of factory settings:
This only occurs when the PROFIBUS
address (DIP switch) is "0" at Power
ON.
Temporary state while the default FF
configuration data is being restored in
the retentive memory.
When startup is complete, the "BF DP"
LED flashes (slowly).
*
*
Off
Flashes
Off
On
After startup:
The Compact FF Link has no active
communication with the DP Master.
Temporary status when the Compact
FF Link has no connection to the DP
master.
● Check the
PROFIBUS
address.
● Check whether
the correct project
is loaded in the
CPU.
*
*
Off
On
Off
*
The Compact FF Link has no connec‐
tion to a DP Master. Final status when
the Compact FF Link has no connection
to the DP master.
Alarm, error, and system messages
11.1 Diagnostics using LEDs
Compact FF Link
58
Operating Instructions, 03/2015, A5E35651552-AA