II - DCE FEL ČVUT v Praze

SIMATIC S7 Ex Analog Modules
Voltage measuring
ranges
3-4
With these options you must first ensure by way of interrogation that you will
not change the coding for invalid measured values (-32768 / 8000H and
32767 / 7FFFH) or you incorporate it in the filtering process.
Table 3-3 shows the representation of the digitized measured value for the
voltage measuring ranges 25 mV, 50 mV, 80 mV, 250 mV,
500 mV and 1 V.
Table 3-3 Representation of the digitized measured value of an analog input module (voltage measuring ranges)
Measuring range Units Range
25 mV 50 mV 80 mV 250 mV 500 mV 1 V decimal hexadecimal
> 29.397 > 58.794 > 94.071 >293.96 >587.94 >1.1750 32767 7FFFH Overflow
29.397 58.794 94.071 293.96 587.94 1.1750 32511 7EFFH
: : : : : : : : Overrange g
25.001 50.002 80.003 250.02 500.02 1.0001 27649 6C01H
25.000 50.000 80.000 250.00 500.00 1.0000 27648 6C00H
18.750 37.500 60.000 187.50 375.00 0.7500 20736 5100H
: : : : : : : :
- 18.750 - 37.500 - 60.000 - 187.50 - 375.00 - 0.7500 -20736 AF00H
- 25.000 - 50.000 - 80.000 - 250.00 - 500.00 - 1.0000 -27648 9400H
- 25.001 - 50.002 - 80.003 - 250.01 - 500.02 - 1.0001 -27649 93FFH
Rated
range
: : : : : : : : Underrange g
- 29.398 - 58.796 - 94.074 - 293.98 - 587.96 - 1.1750 -32512 8100H