abt totalizer

hello sir,
i am parag uike from india.working on a A.B. plc. commomnly i used to prefer the ladder logic. in which i am facing a problem of the totalizer. i am using the flow transmitter , 0-24 m3/ hr range for 4 -20 ma.if any one can tell me how totalizer logic has to be made for this analog transmitter.if u r giving any example in ladder logic then it will be very helpfull to me understand it clearly.

your answer will be appriciated.
ur support is needed.
thank you.
best regards,
parag uike
anita automations

Note this is a PLC5 program. Ladder is a subroutine run by a STI
every second. Hope thid helps.