Siemens S7-300 Installation And Operating Manual page 194

Analog modules
9.2 SM 336; AI 6 x 13 Bit
Wiring scheme C, voltage measurement 0 V to 10 V, for application 1
You can interconnect four process signals with an analog module. Sensor supply Vs is
provided by the analog module for 4 channels. The sensors can also be connected to an
external sensor supply (see figure
SM 336; AI 6 x 13Bit
(Page 184)").
Figure 9-12
194
External sensor supply, 4-wire transducer for
in chapter "Properties, front view, wiring diagram and block diagram
Voltage measurement 0 to 10 V for application 1 with SM 336; AI 6 x 13Bit
Installation and Operating Manual, 01/2010, A5E00085586-10
Fail-safe signal modules