SIPLUS S7-1200 SB 1231 1AI RTD -40 ... +60°C, start up -25°C, with conformal coating based on 6ES7231-5PA30-0XB0 . SIPLUS S7-1200, analog input, SB 1231RTD, 1 AI RTD, PT 100 and PT1000 SIMATIC S7-1200 Basic Controller - Flexible thanks to wide variety of communication options If you only have to extend your SIMATIC S7-1200 CPU with a few inputs or outputs, signal boards are a good alternative to signal modules. Signal boards are plugged directly onto the front of the controller (also possible with the CPU 1211C) and are available as digital and analog input, output and hybrid modules. A communications board with an RS 485 interface is also available. Signal boards thus permit subsequent expansion of the configuration without requiring any further space in the control cabinet. Just like the CPU, the analog input modules are also protected against extreme ambient conditions. Due to the 100% conformal coating they can withstand biologically, chemically and physically active substances, condensation, frost, and corrosive gases. Regardless of the conditions, your analog signals are reliably recorded
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