High Speed counter 1769-HSC and Long Words

I have an allen bradley high speed counter card 1769-HSC that I use in a micrologix 1500. I use a Copy Word (CPW) that moves the phisical input into a Long Word destination with a length of 2. I am totalizing gallons from a pulse meter that gives me 200 pulses per gallon. Does anyone know what the maximum count number is that the card can take. For example, I need to totalize up to 500,000 gallons. This means the Long word address needs to store 10,000,000 counts. Can it do this?

The documentation for the card shows a 32 bit "current count" so its limits are the same as the Long data type. It can easily store 10,000,000 counts. I believe the max, if the Long is interpreted as a signed number, is over 2,000,000,000

you are absolutely correct. After more digging I found that the maximum count to be 2,147,483,647. Thank-you for your input

Your best bet there would be just to totalize up one gallon, fire a one-shot to increment the actual "Gallons" register, and reset the counter.