1) SIEMENS Analog I/O Calibration= int VAL 0- 27648
Note that the value 27648 is only the "Rated maximum analog value (0- 27648)". The other range in the PLC is the "overcontrol range (27649-32511)". While the real maximum value is the "overflow (0-32767)".
2) 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 readings the processor)
3) For unipolar data, this would mean 0 to 27648 represents full range; above 27648, overage, below 0, underanged. See the attached illustration for the equivalent numeric values i of a 4-20 mA or 0-20 mA signal.
3) NORMX, SCALX, ADD, SUB, DIV, MUL, CALCULATE, CONV/ Specially USED for Analog Data Calibration
4) PID Instruction and Temperature Control
PID Block
5) PID Control using Hardware_ S7 1500
We need Two Outputs
For Heating and Cooling
Temperature = Feedback = 4-20mA, 0-27648, 0-300C
0C = 4mA, 4mA = offset value,
300 C = 20mA = 27648,
Now Calibrate, Analog value as per your requirement
20mA = int 27648
Regulation= 16mA/27648= 0.578uA
1mA = int. 1382.4= check mul is it return, 27648
4ma = int. 5529.6 offset value approximately
to be continue
Now will See analog input for 0-20mA
300 C = 20mA = 27648,
4 SUB 20 = 16 mA, 16 X 1382.4 = 22118.4
Now Calibrate Temperature, = 300/22118 = 0.01356
= for 25C = 0.01356x25 = 0.339/ not suitable for our
physical controller, so we need, another way to try
Our Controller Can Measure: 0-100C
temperature regulation = .1 (10)
Temperature Sensor Regulation = .01 (100)
Now We See The, Actual Process of
SIEMENS Temperature Controller Calibration
Temperature Regulation, .1 = 10
After Longtime Calibration
Now we will see PID,
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27 дек 2023
