Chapter 7
104
Flexi Link
Now press the Teach button on any of the remaining stations. The system will now
continue to operate as if the missing stations were still present. Their “real” process
image will however be replaced with the static default values that you have
configured before (see Section 7.4.5). The EFI status bits of the remaining stations
will now show which stations have been suspended (e.g. Station C missing and
Station missing will become Low again and Station C taught becomes High).
To bring a missing and consequently suspended station back into operation,
reconnect its power supply. As soon as the station has finished powering up, the
other stations will detect its presence and show an EFI error. The EFI status bit
Station C taught remains High while the system status bit Teach required
becomes High.
Now press the Teach button again. The system will reintegrate the suspended
station and continue operation. The Teach required system status bit will become
Low as well as the respective EFI status bits (e.g. Station C missing remains Low
and Station C taught also becomes Low).
If a station is missing not because its power supply has been switched off but due to
an interruption of its EFI connection, it will most likely have gone into an error state. In
this case you will have to reset this station by interrupting its power supply for at least
3 s before it can be reintegrated into the system.
7.4.7 Flexi Link teaching status and diagnostics
Each CPU in a Flexi Link system signals via status bits whether Teaching is required
and which station is missing or is suspended (= has been taught). These status bits
are available as inputs of the respective CPU in the logic editor.
Note
Figure 80:
Flexi Link system status
information in the logic editor
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