Siemens SIMATIC S7-300 Manual page 220

Representation of the analog values of analog modules
5.3 Setting the measuring method and ranges of analog input channels
Reconnecting measuring range modules
To reconnect a measuring range module:
1. Use a screwdriver to lever the measuring range module out of the analog input module.
Figure 5-1
2. Insert the measuring range module into the required slot (1) of the analog input module.
Figure 5-2
5-22
Levering the measuring range modules out of the analog input module
The measuring range selected is the one that points to the marker on the module (2).
Inserting measuring range modules into the analog input module
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04