Siemens Simatic S7 Series

Technical specifications
A.4 Analog inputs and outputs expansion modules (EMs)
S7-200 SMART
624 System Manual, 09/2015, A5E03822230-AC
A.4.6
Measurement ranges of the analog inputs for voltage and current (SB and EM)
Table A- 104 Analog input representation for voltage (SB and EM)
System
Voltage Measuring Range
Decimal
Hexadecimal
±10 V
±5 V
±2.5 V
±1.25 V
32767 7FFF
1
11.851 V 5.926 V 2.963 V 1.481 V Overflow
32512
7F00
32511 7EFF 11.759 V 5.879 V 2.940 V 1.470 V Overshoot range
27649
6C01
27648
6C00
10 V
5 V
2.5 V
1.250 V
Rated range
20736
5100
7.5 V
3.75 V
1.875 V
0.938 V
1
1
361.7 μV
180.8 μV
90.4 μV
45.2 μV
0
0
0 V
0 V
0 V
0 V
-1
FFFF
-20736
AF00
-7.5 V
-3.75 V
-1.875 V
-0.938 V
-27648
9400
-10 V
-5 V
-2.5 V
-1.250 V
-27649
93FF
Undershoot range
-32512
8100
-11.759 V
-5.879 V
-2.940 V
-1.470 V
-32513
80FF
Underflow
-32768
8000
-11.851 V
-5.926 V
-2.963 V
-1.481 V
1
7FFF can be returned for one of the following reasons: overflow (as noted in this table), before valid values are availa-
ble(for example immediately upon a power up), or if a wire break is detected.
Table A- 105 Analog input representation for current (SB and EM)
System
Current measuring range
Decimal
Hexadecimal
0 mA to 20 mA
4 mA to 20 mA
32767
7FFF
23.70 mA
22.96 mA
Overflow
32512
7F00
32511
7EFF
23.52 mA
22.81 mA
Overshoot range
27649
6C01
27648 6C00 20 mA 20 mA Nominal range
20736
5100
15 mA
16 mA
1 1 723.4 nA 4 mA + 578.7 nA
0
0
0 mA
4 mA
-1
FFFF
Undershoot range
-4864
ED00
-3.52 mA
1.185 mA
-4865
ECFF
Underflow
-32768
8000