Siemens SIMATIC - Measurement Types and Measuring Ranges

Analog modules
6.8 Analog input module SM 331; AI 2 x 12 Bit; (6ES7331-7KB02-0AB0)
S7-300 Module data
376 Manual, 06/2017, A5E00105505-AJ
6.8.2 Measurement types and measuring ranges
Introduction
SM 331; AI 2 x 12 Bit is equipped with a measuring range module. The measurement type
and range is configured at the "measuring range" parameter in
STEP 7 . You can use the
default "voltage" measurement type and "± 10 V range without having to program the
SM 331; AI 2 x 12 Bit in
STEP 7 .
Measuring range module
Change the position of the measuring range module to set the measurement type and range
(see the chapter
Setting the measurement types and ranges of analog input channels ). The
necessary settings are also available on the module's imprint. Mark the position of the
measuring range module on the front door (see figure).
Table 6- 21 Measurement types and ranges
Selected type of measurement
Measuring range
(type of sensor)
Measuring range mod-
ule settings
V: Voltage ± 80 mV
± 250 mV
± 500 mV
± 1000 mV
A
± 2.5 V
± 5 V
1 V to 5 V
± 10 V
B
TC-I: Thermocouple
(internal comparison) (thermal voltage meas-
urement)
Type N [NiCrSi-NiSi]
Type E [NiCr-CuNi]
Type J [Fe-CuNi]
Type K [NiCr-Ni]
Type L [Fe-CuNi]
A
TC-E: Thermocouples
(external comparison)
(thermal voltage measurement)
2DMU: Current (2-wire transducer)
4 mA to 20 mA
D
4DMU: Current (4-wire transducer) ± 3.2 mA
± 10 mA
0 mA to 20 mA
4 mA to 20 mA
± 20 mA
C
R-4L: Resistance
(4-wire connection)
150 Ω
300 Ω
600 Ω
A