Siemens Simatic S7-200 System Manual page 385

Calibration and Configuration Location
The calibration potentiometer and configuration DIP switches are accessed through the
ventilation slots of the module, as shown in Figure A-34.
Expansion module
Figure A-34
Configuration
Table A-2 shows how to configure the module using the configuration DIP switches.
Switches 1 and 3 select the analog input range. All inputs are set to the same analog input
range.
Table A-2
Configuration Switch
1
ON
ON
OFF
1
0 to 20 mA measurements were made using the internal 250-Ω current-sense resistor.
S7-200 Programmable Controller System Manual
C79000-G7076-C230-02
Gain
Calibration Potentiometer and Configuration DIP Switches
Configuration Switch Table for EM231 Analog Input
3
OFF
OFF
ON
S7-200 Data Sheets
1 2 3 4
Full-Scale Input Full Scale Input Resolution Resolution
0 to 5 V 1.25 mV
5 µA
1
0 to 20 mA
0 to 10 V 2.5 mV
OFF
ON
A-61