Siemens Simatic M7-400 Reference Manual page 340

Analog Modules
Terminal Assignment Diagram of the SM 431; AI 8
INTF
EXTF
Figure 5-39
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Terminal Assignment Diagram of the SM 431; AI 8 x RTD x 16 Bit
S7-400, M7-400 Programmable Controllers Module Specifications
RTD 16 Bit
SE+0
SE–0
CH0 Word 0
SO0
AGND
SE+1
SE–1
CH1 Word 1
SO1
AGND
SE+2
SE–2
CH2 Word 2
SO2
AGND
SE+3
SE–3
CH3 Word 3
SO3
AGND
SE+4
SE–4
CH4 Word 4
SO4
AGND
SE+5
SE–5
CH5 Word 5
SO5
AGND
SE+6
SE–6
CH6 Word 6
SO6
AGND
SE+7
SE–7
CH7 Word 7
SO7
AGND
A5E00069467-07