Festo Controller CECC
67
5 Diagnostics
5.1 General error behaviour
Warning
When an error occurs, the controller carries on the active program instead of stopping. Unwanted
actuator movements can cause collisions resulting in serious injury.
• Integrate error handling mechanisms for all error categories in the user program.
• Make sure that nobody enters the positioning range of the drives or other connected actuators.
The following diagnostic options are available for the controller CECC:
Diagnostics via Advantages
Status LEDs Fast, local error detection using
– controller LEDs
– CECC-specific LEDs
Controller
configuration
Online diagnostics without programming
User program Detailed diagnostic evaluation:
– System event CECC_system_fault
– Support for function blocks from the Festo CECC_3 library section
"Diagnostics".
Table: Diagnostic options provided by the CECC
Error
class
Weighting Error no. Evaluation via function
block in
Festo CECC_3 library
Display in the
Codesys device
log
Display in the
FFT
1)
0 No error 0 X – –
1 Information 200 ... 255 X X X
2 Warning 1 ... 127 X X X
4 Error 128 ... 199 X X X
1) The Festo Field Device Tool (FFT) program can be downloaded via the Festo Support Portal
www.festo.com.
Table: Error evaluation options
Figure: Editing window with "Device" tab - "Log" sub-tab
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