In online mode it is possible to perform general diagnostics of bus errors and device faults.
These diagnostics can be performed using the screens available in Control Expert or by using the system bits and words managed by the application.
Two modes are available:
Each connection point configured (including connection points 0 and 63) has a report variable. This variable contains the communication and performance counter values.
This variable contains:
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the activity counters numbered from 16#00 to 16#20 compliant with the WORLDFIP standard,
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the fault counters numbered from 16#21 to 16#7F compliant with the WORLDFIP standard,
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the manufacturer-specific counters numbered from 16#80 to 16#FF; these counters are not compliant with the WORLDFIP standard.
The fault counters change value when communication faults occur on the Fipio bus.
Four types of screen are used to view changes in the value of these various counters and so to view communication faults:
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The Fipio Bus Monitoring screen provides a global view of the Fipio bus. It displays the communication faults for the whole bus.
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The Device Monitoring screen provides a summary for each connection point. It shows all the connection points and signals any change in the value of the fault counters for each connection point.
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The Device Monitoring at Connection Point screen shows all counters with any change in their value for a given connection point.
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The Communication Errors History screen provides a fault history. It is used to keep a dated trace of changes in the fault counters.
Only one single screen of each type can be opened (one per connection point for the third type). If you try to open a screen that is already open it will be displayed instantly.
