7 wash arbitration logic – K-Patents DD-23 User Manual
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7.7 Wash arbitration logic
The Divert Control Unit takes care that if there are two instruments in operation, they
won’t wash at the same time (as that would trip the system). This is done by the simple
logic described in Figure 7.7
Each instrument control their own wash cycle. Before the start washing, they request
a wash permission from the Divert Control Unit. If the other instrument is already
washing, the unit does not grant this permission until the wash cycle is completed.
no
WAIT
WASH
IDLE
The other
instrument
washing?
yes
wash interval
elapsed
wash done
the other instrument
done washing
Figure 7.7
Wash arbitration logic