Analog Scaling Concept in PLC || PLC Programming Tutorials for Beginners
The value 27648 has simply been selected as the maximum normal range value of any analog signal transferred to the CPU by a Siemens analog module. This numerical value is independent of the resolution of the particular analog module used (this is a way to standardize all scaling of analog readingsin the processor)
For unipolar data, this would mean 0 to 27648 represents full range; Above 27648, overrange, below 0, underrange.See the attached illustration for the equivalent numeric values iof a 4-20 mA or 0-20 mA signal.
its a plc programming tutorial for scaling instructions and philosophy of Analog input and output scaling from Raw value to engineering units... example is given from Allen Bradley plc,rslogix5000 software...
Analog Scaling Concept in PLC || PLC Programming Tutorials for Beginners
The value 27648 has simply been selected as the maximum normal range value of any analog signal transferred to the CPU by a Siemens analog module. This numerical value is independent of the resolution of the particular analog module used (this is a way to standardize all scaling of analog readingsin the processor)
For unipolar data, this would mean 0 to 27648 represents full range; Above 27648, overrange, below 0, underrange.See the attached illustration for the equivalent numeric values iof a 4-20 mA or 0-20 mA signal.
its a plc programming tutorial for scaling instructions and philosophy of Analog input and output scaling from Raw value to engineering units... example is given from Allen Bradley plc,rslogix5000 software...
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