Siemens 6ES7 216-2BD23-0XB0 Programmable Logic Controller

The Siemens 6ES7216-2BD23-0XB0 CPU 226 Compact PLC is a SIMATIC S7-200 controller designed for compact machine automation and standalone industrial control. It runs on 120–230 V AC and provides 24 × 24 V DC digital inputs and 16 × relay outputs, with 16/24 KB program memory and 10 KB data memory. Two PPI/RS-485 ports handle communications, and it supports S7-200 expansion modules for scalable I/O (up to seven units typical). The unit mounts on DIN rail and measures roughly 200 × 90 × 70 mm, weighing about 0.56 kg. This model is discontinued, with spare parts available, and common replacements include Siemens 6ES7216-2AD23-0XB0, 6ES7216-2BD22-0XB0, and 6ES7214-2BD23-0XB0; it is commonly used in conveyor systems, packaging machines, HVAC, and assembly equipment where compact control is needed.