Siemens Simatic S7-300

Analog modules
6.7 Analog input module SM 331; AI 8 x 12 Bit;(6ES7331-7KF02-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
6-57
6.7.1 Measuring methods and ranges
Introduction
Module SM 331; AI 8 x 12 Bit has measuring range modules
Use the measuring range module and the "measuring range" parameter in
STEP 7 to set the
measuring methods and measuring ranges.
The "voltage" measuring method and "± 10 V" measuring range are set by default at the
module. You can use those default settings without having to program the SM 331; AI 8 x 12
Bit in
STEP 7 .
Measuring range modules
Reposition the measuring range modules to suit the measuring method and range (see
chapter
Setting measuring methods and ranges of analog input channels ). The necessary
settings are also available on the module's imprint.
Measuring methods and ranges
Table 6-18 Measuring methods and ranges
Selected measuring method Measuring range
(type of sensor)
Measuring range module
settings
± 80 mV
± 250 mV
± 500 mV
± 1000 mV
A
V voltage
± 2.5 V
± 5 V
1 V to 5 V
± 10 V
B
Thermocouple
TC-I
(internal comparison) (thermal voltage
measurement)
Linearization is not taken into account
Thermocouple
TC-E
(external comparison) (thermovoltage
measurement)
Linearization is not taken into account
Type N [NiCrSi-NiSi]
Type E [NiCr-CuNi]
Type J [Fe-CuNi]
Type K [NiCr-Ni]
Type L [Fe-CuNi]
A
Thermocouple
(linear, internal comparator)
(temperature measurement) TC-IL
Thermocouple
(linear, external comparator)
(temperature measurement) TC-EL
Type N [NiCrSi-NiSi]
Type E [NiCr-CuNi]
Type J [Fe-CuNi]
Type K [NiCr-Ni]
Type L [Fe-CuNi]
A