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8.1.9
Error scenarios
The most common errors, faults and possibilities to correct errors can be found in the chapter
4Diagnostics and fault elimination
In the following sections, the causes and remedies for the most frequent application errors in
EtherCAT applications are described. The state diagram and descriptions on the next pages
serve to localize and remove an error.
Switch on L-force Controller and field devices
Executable EtherCAT
EtherCAT configuration ok?
PLC:
EtherCAT:
Application error-free?
PLC:
EtherCAT:
Stop PLC
PLC:
Reset (warm)
EtherCAT:
Reset (cold)
The System is running
8.1.9.1
"Pre-Operational" EtherCAT state is not achieved
During the start-up of the EtherCAT bus, a check is carried out at the transition from Init to
Pre-Operational to determine whether the physical bus configuration corresponds to the
configured bus configuration. If theses configurations are different, the master does not enter
the Pre-Operational state. Furthermore, the slaves are initialized during the transition from
Init to Pre-Operational. If this fails because, for instance, a slave rejects the configuration, the
master does not enter the Pre-Operational state.
^ 96
1
project available?
YES
Load application
(Online -> Load)
YES
Reset
Stop
Pre-Operational
(origin)
Start program
(Online -> Start)
PLC:
NO
EtherCAT:
YES
Running
Safe-Operational
Reset
Running
Operational
(origin)
Configuring the network
NO
NO
1
Running
Pre-Operational
1
EtherCAT
Error scenarios
Eliminate error
PLC:
Stop
EtherCAT:
Init
PLC:
Stop
EtherCAT:
Unknown
PLC:
Running
EtherCAT:
Unknown
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