Response of the LEDs in operation
LED
Color
State
Description, cause
Remedy
RDY
(READY)
–
OFF
Electronics power supply is missing or outside per‐
missible tolerance range.
Check power supply
Green
Continu‐
ous light
The component is ready for operation and cyclic
DRIVE-CLiQ communication is taking place.
–
Flashing
light
0.5 Hz
Commissioning/reset
–
Flashing
light
2 Hz
Writing to the memory card
–
Red
Flashing
light
2 Hz
General error
Check parameterization/con‐
figuration
Red/
green
Flashing
light
0.5 Hz
Control Unit is ready for operation.
However, there are no software licenses.
Obtain licenses
Orange
Flashing
light
0.5 Hz
Updating the firmware of the connected DRIVE-
CLiQ components
–
Flashing
light
2 Hz
DRIVE-CLiQ component firmware update com‐
plete. Wait for POWER ON for the components in
question.
Perform a POWER ON of the
affected component
Green/
Orange
or
Red/
Orange
Flashing
light
2 Hz
Component detection via LED is activated
(p0124[0]).
Note:
Both options depend on the LED status when com‐
ponent recognition is activated via p0124[0] = 1.
–
PN
PROFIdrive
cyclic opera‐
tion
–
Off
Cyclic communication has not (yet) taken place.
Note:
PROFIdrive is ready for communication when the
Control Unit is ready (see LED RDY).
–
Green
Continu‐
ous light
Cyclic communication is taking place.
–
Flashing
light
0.5 Hz
Full cyclic communication is not yet taking place.
Possible causes:
● The controller is not transferring any setpoints.
● During isochronous operation, no global control
(GC) or a faulty global control (GC) is
transferred by the controller.
● "Shared Device" is selected (p8929=2) and only
one controller connected.
–
Red
Flashing
light
0.5 Hz
Bus fault,
incorrect parameter assignment/configuration.
Adapt configuration between
controller and devices
Flashing
light
2 Hz
Cyclic bus communication has been interrupted or
could not be established.
Correct the fault
Service cases - hardware
4.9 Control Unit CU320-2 PN and CU310-2 PN
Software and hardware
Service Manual, 08/2018, 6FC5397-5DP40-6BA1
125