Overview
The 6ES7223-7BF50-0XB0 is a Siemens SIMATIC S7-1200 G2 SB 1223 digital input/output module carrying four inputs and four outputs. Inputs are 24 V DC sink/source rated at 100 kHz; outputs are 24 V DC 0.1 A sinking/sourcing transistor type also switching at 100 kHz. This signal board plugs directly into the S7-1200 G2 CPU, adding 4 inputs and 4 outputs.
Function & operation
The module sits on the S7-1200 G2 CPU's front connector, addressed as a signal board. The four digital inputs accept 24 V DC from either sourcing or sinking field devices — no polarity matching required at the input side. The 100 kHz switching frequency on both inputs and outputs makes this board suitable for counting pulses from incremental encoders or proximity sensors on a fast pick-and-place station. The four transistor outputs sink or source 0.1 A per channel at 24 V DC, enough for direct pilot duty on small contactors, indicator lamps, or solenoid valves. Total package current is the sum of all active outputs; stay within the 0.1 A per-channel ceiling.
Applications
This SB 1223 module is used in compact machine control where the S7-1200 G2 CPU needs a small number of high-speed I/O points without adding a full expansion module. Typical applications include conveyor registration mark detection, rotary encoder counting on packaging machines, and fast sorting station inputs.