S7-1200 CM1231 AI
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ANALOG INPUT SM 1231, 4AI |
SIMATIC S7-1200, ANALOG INPUT, SM 1231, 4 AI, +/-10V, +/-5V, +/-2.5V, OR 0-20MA/4-20 MA, 12 BIT + SIGN BIT (13 BIT ADC)
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https://support.industry.siemens.com/cs/document/40913432/how-do-you-connect-a-sensor-to-the-analog-signal-modules-of-simatic-s7-1200
