6ES7235-0KD22-0XA0Overview The Siemens 6ES7235 0KD22 0XA0 is an analog I O module designed for use with the SIMATIC S7 200 series, specifically the S7 22X CPU. It provides four analog input channels and one analog output channel, supporting 10 V DC signals with 12 bit resolution. Key Features Compatible with SIMATIC S7 22X CPUs only 4 analog inputs and 1 analog output Input voltage range: 10 V DC; current range: 020 mA Output voltage range: 10 V DC; current range: 020