Lenze EtherCAT control technology - Manual (Page 148)

Control technology | EtherCAT communication manual
Diagnostics
Error scenarios
148
L
DMS 3.1 EN 01/2011 TD17
11.6.4 EtherCAT bus does not enter the Operational state
The control unit/PLC transfers the EtherCAT bus to the Operational state if it set to the RUN
mode.
The EtherCAT bus can only reach the Operational state if the bus has already been set to
the Pre-Operational state.
11.6.5 Error during EtherCAT data transmission
Causes Remedies
The current master configuration has not been loaded on
the control system or imported into the »PLC Designer«
project.
Load the current master configuration onto the control
system or import it into the »PLC Designer« project.
The DC cycle time of the master configuration is not
identical with the task cycle time of the Axis_IO_Group/
IO_Group.
Set identical task and DC cycle times.
Note: Unlike loading a project and starting the PLC
program via the »PLC Designer«, starting via a boot
project also starts the PLC - even if there is a DC/task
cycle difference!
Causes Remedies
The »PLC Designer« project does not access the EtherCAT
inputs and outputs via symbolic addresses, but via
logical addresses. This causes problems if the bus
structure, the PDO selection, etc. have been changed.
Check and correct the mapping settings in the master
configuration.
Executing PDO mapping ( 65)
During start-up of the PLC, the complete configuration/
PDO mapping is written into the EtherCAT slaves.
Mapping entries, e.g. from the »Engineer«, are not
overwritten.
For the Servo Drive 9400 HighLine, the ports are not
mapped correctly or not mapped at all in the »Engineer«,
and parameters have therefore not been transferred to
the device.