Allen-Bradley RSLinx

Note that an Integer (PI 2), an int16 (PI 3) and a float16 (PI 3) are 15-bit unsigned integers with a possible range of 0 to 32,767. If a value collected by the Interface is outside of this range, a Real (PI 2), int32 (PI 3), or float32 (PI 3) point type should be used. Otherwise, the value will be flagged as "Under Range" or “Over Range”. ................
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