4/6/2024 0 Comments Directsoft 5 student downloadThe dashed red line indicates a linear line and the blue line shows the actual gallons in the tank. It certainly isn’t a linear equation as seen in Figure 1. You could perform numerous compare statements for the same function, but lookup tables can cut your programming time and number of rungs considerably.įor instance, finding the number of gallons in a horizontal tank is a fairly long and complex math process that can take up a lot of scan time. Indirect addressing has many uses, the most common of which is lookup tables. Accessing the operand requires two memory accesses – one to fetch the effective address and another to read or write the actual operand. Indirect addressing, or pointer addressing as it is called with Koyo PLCs, is an addressing mode found in many processors’ instruction sets that specifies a register that contains the effective address.
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