17: PLC Analog Signal Scaling Concept Explained So Easy

The value 27648 has simply been selected as the maximum normal range value of any analog signal transfered to the CPU by a Siemens analog module.This numerical value is independant 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. The basic configuration of the analog modules is best explained in the S7-300 module Data manual: http://support.automation.siemens.com/WW/view/en/8859629 Look at the chapters on Principles of Analog value processing and Representation of the analog values of analog modules. Hope this helps, Lecture#1: What is PLC? https://youtu.be/d6sSKfCx1A0 Lecture#2: Contactor and relay https://youtu.be/s5oCLIkBbHk Lecture#3: PLC hardware components https://youtu.be/nxB4tte7mcI Lecture#4: PLC CPU indications and errors https://youtu.be/HFEfT5NaPYo Lecture#5: PLC Memory map https://youtu.be/ARX6b9v6i7c Lecture#6: Write First PLC Program https://youtu.be/GC5RPBBriNI Lecture#7: Write AND & OR PLC Program https://youtu.be/gahvNi4GZIQ Lecture#8: Garage Door PLC Project Part-1 https://youtu.be/lduAA1GtlDQ Lecture#9: Garage Door PLC Project Part-2 https://youtu.be/MulnFKQIE30 Lecture#10: Defining Interlocks in PLC https://youtu.be/50UfoWTu0Lw Lecture#11: PLC timer programming tutorial https://youtu.be/OL65ZddE2oE Lecture#12: Oil Tank Level Control PLC Project https://youtu.be/2b1OLpvU-V8 Lecture#13: PLC Data Types https://youtu.be/8TUcjuChqRI Lecture#14: PLC Counters Examples https://youtu.be/vzL64zwdVBg Lecture#15: PLC Counters Project https://youtu.be/fVJI--f1Cg0 Lecture#16: Parking Lot Automation PLC Project https://youtu.be/XimVf66Nhh0 Lecture#17: PLC Analog Signal Scaling Concept https://youtu.be/xb4zcn1xKx4 Lecture#18: Analog Scaling PLC Program by using FC105 &106 https://youtu.be/KvCF3YQBZwI Lecture#19: Function (FC) vs Function Block (FB) https://youtu.be/nXnwlKLixbA Lecture#20: Two Direction Motor Control Using Function Block https://youtu.be/ONPht2cNgYA