S7-200 Digital I/O Expansion — EM 223
The 6ES7223-1BF20-0XA0 is a digital input/output expansion module for the SIMATIC S7-200 PLC family, specifically designed for S7-22X CPUs only. It provides 4 digital inputs and 4 digital outputs at 24V DC, adding a compact mixed I/O slice to an existing S7-200 rack.