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I have totalized in AB PLC5 & SLC with no problems, however using a Direct Logic PLC is different. I need to totalize a GPM flow. Initially, I scale the raw analog value, then divide it by 60, load it to a register and add the value to itself every second. When I do this the flow total resets to zero after 65536. Do I need to use 2 words for this function? Is there a easier way to do this function. Any help will be appreciated.