Siemens SIMATIC S7-1200, Analog input, SB 1231The SIMATIC S7 1200 Signal Board SB 6ES7231 5PA30 0XB0 from Siemens offers a cost effective expansion of your Siemens S7 1200, With 1 RTD analog input. The signal board SB 1232 is simply plugged into the front of the CPU.
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