PROFINET Communication
‑82‑
Table 4–5 Fault code of the power supply unit
Fault
Code
Possible Cause Solution Reset Mode
E16.71 The communication
between the PN card
and the master station
fails.
Check whether the connection between the
communication card and PLC is in poor contact. Make
sure that they are properly connected.
When Fd‑06 is set to 1,
auto reset is performed.
When Fd‑06 is set to 0, you
need to manually reset the
fault.
E16.72 The communication
between the
communication card
and the axis fails.
Check whether the connection between the
communication card and power supply unit is in poor
contact. Make sure that they are properly connected.
None The slave station has an
application alarm.
Check the alarm source and eliminate the AC drive
fault.
(The alarm is generated only on the PLC.)
E16.74 The configuration is
incorrect (the
configured axis does
not exist).
Check whether the configured slave station exists and
ensure that startup with station lost is disabled (Fd‑50
of the power supply unit is set to 0).
E16.75 The process data and
mapping of the drive
unit do not match.
Check the process data and the number of mapping
relations configured for the drive unit, and make sure
that they match.
E16.76 The process data and
mapping of the power
supply unit do not
match.
Check the process data and the number of mapping
relations configured for the power supply unit, and
make sure that they match.
4.8.2 PLC Diagnosis Information
The following table lists mapping between the PLC diagnosis information and fault
codes.
Fault Code Diagnosis Information
E16.72
slave station lost error
E16.74
lack of matched slave
E16.75
CANopen slave communication objects
error
E16.76
communication objects error of PN to
CANopen bridge
You can locate and view the current error messages through the diagnostic function
of the PLC background. Choose ""OOnnlliinnee && ddiiaaggnnoossttiiccss>>DDiiaaggnnoossttiiccss bbuuffffeerr"" and
then view the detailed diagnosis information. As shown in the figure below, slot 2.4
(corresponding to drive unit 1) has an error indicating that the process data of drive
unit 1 does not match the mapping.