Siemens 6ES5947-3UA22 CPU Module

Siemens 6ES5947-3UA22 is a SIMATIC S5-155U CPU 947 processor module designed to serve as the central processing unit for S5-155U controllers. This single-width CPU 947 module provides multiprocessing capability and functions as the Memory and Interface Unit (MAI) for CPU 946/947 families, delivering 128 KB of internal memory for user programs and data. It features a 1 x 20 mA current-loop interface (TTY) for OP/PG/PC connections via a 15-pin Cannon socket, enabling direct operator and programming terminal access. The device is cataloged under order number 6ES5947-3UA22 and is intended for use within legacy Siemens automation systems, offering compatibility with S5-155U peripherals in a compact form factor suitable for replacement or retrofit in older installations. Suitable for retrofits or spares in legacy S5-155U control systems.