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Anyone find an elegant way to implement flow totalization with the O6 Logo and Logo TD? I've got something working but rather messy. A flow total must be retentive - did with a counter that increments every thousand gallons. Flow totalizationwas easy todo with a traditional PLC ladder approach - divide GPM flow by 10 every 6 seconds and keep adding result to itself. I found a way to make analog math add to itself using 3 blocks set to last state, though this isn't retentive if power is lost. I reset these by changing one of the 4 math terms (multiply) from 1 (normal) to zero (reset) when flow gets to a 1000 GPM, which before resetting increments a counter to retentively store thousands of gallons. This is at least somewhat retentive - I can't lose more than 1000 gallons of my total when power is lost. A download from the PC of course wipes out all totals; though we can do with this.