Lenze EtherCAT control technology - Manual (Page 147)

DMS 3.1 EN 01/2011 TD17
L
147
Control technology | EtherCAT communication manual
Diagnostics
Error scenarios
11.6.1 Compilation error in »PLC Designer«
11.6.2 EtherCAT bus does not enter the Pre-Operational state
During the start-up of the EtherCAT bus, a check is carried out at the transition InitPre-
Operational to determine if the physical bus configuration corresponds to the configured
bus configuration. If theses configurations are different the master does not enter the Pre-
Operational state.
Furthermmore, the slaves are reset during the transition from initialization in Pre-
Operational. If this fails because, for instance, a slave denies the configuration, the master
does not enter the Pre-Operational state.
11.6.3 Control unit/PLC does not enter the RUN state
Causes Remedies
Logic system: No update task has been created for the
IO_Group.
Create an update task.
SoftMotion system: No update task has been created for
the Axis_IO_Group.
Causes Remedies
The current master configuration has not been loaded on
the control system or imported into the »PLC Designer«
project (Axi-IO_Group or IO_Group are missing)
Load the current master configuration onto the control
system or import it into the »PLC Designer« project.
Faulty master configuration
• Slaves are missing.
• Slaves have been interchanged or their configuration
is faulty.
• A wrong slave type has been configured.
Correct the master configuration with the »EtherCAT
Configurator« and load it onto the control system or
import it into the »PLC Designer« project.
Wiring error
• Cabling is incomplete or there is a cable break.
• Faulty cabling of the slave
• The inputs and outputs of the EtherCAT
communication module are reversed (IN/OUT
connections).
Check the wiring and correct it.
1.Stopping the PLC program: Execute the menu
command OnlineStop.
2.Plug in the bus cable.
3.Execute the SMC_ResetAxisGroup function block or a
Bus restart ( 139) .
Causes Remedies
Boot project is missing or faulty. • Start the control unit/PLC manually.
• Create a boot project.
• Correct the boot project.
Note: Only save a tested and consistent boot project to
the control unit.
The task and DC-cycle times set in the logic/motion
system differ.
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!