Siemens SIMATIC S7-1200 G2 Digital Input Signal Board

Siemens SIMATIC S7-1200 G2 Digital Input Signal Board About

The Siemens 6ES7221-3BF50-0XB0 is a next-generation SIMATIC S7-1200 G2 SB 1221 digital input signal board engineered to expand localized monitoring capabilities without altering the physical dimensions or side-rail footprint of the PLC configuration as detailed on Siemens Product Information. Instead of clicking onto a lateral DIN rail layout, this ultra-compact, 26-gram card seats directly inside the dedicated front-facing signal slot on standard S7-1200 G2 CPUs shown on TIA Siemens Cloud.The board scales up system capacity by adding eight high-speed digital inputs operating at a rated nominal supply voltage of 24V DC. Optimized for rapid process tracking, it flawlessly handles high frequencies up to 100 kHz, making it ideal for picking up rapid pulse inputs and counting tasks. The flexible channels support both sink and source (NPN/PNP) sensor connections, conform to IEC 61131 Type 1 parameters, and operate with an efficient 2.4W typical power dissipation matrix.