I have an existing machine that pulls several rolls of film through it and executes a sealing process. The machine has a scaled feedback value (Tag: Velocity, Type: REAL). No one knows for sure what the engineering unit is (inches per second, feet per minute, etc.) of this tag. The supervisor wants to add an accumulative length counter based on this feedback value. The purpose is to have some idea of the total amount of film run through the machine for comparing to the total pieces of product produced. A colleague suggested using the TOT (Totalizer) function block or structured text instruction in a timed task. But the instruction itself has a timebase for execution control. I've searched the forum but cannot find anything related. Anyone have experience doing this or something similar? Or perhaps use a different instruction? The processor is a CompactLogix 5730-L18ERM. I just received the project specifications today and the due date is next week. (Of course!) So there is no time to research, design, purchase, install additional hardware. No pressure here! Haha.
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