Siemens 6ES5752-0AA23 Interface Module for SIMATIC S5

The Siemens 6ES5752-0AA23 Interface Module for SIMATIC S5 provides a dedicated RS-232C serial interface between CP524 communications processors and the CPU928B, supporting V.24/V.28 signaling for serial data exchange in legacy S5 installations. This interface module is designed to connect CP524 and CPU928B configurations via the RS-232C path, enabling communication with RS-232 devices such as terminals and other serial peripherals through the S5 backplane. Officially cataloged as Siemens part 6ES5752-0AA23, it is commonly supplied in packaging (in package) and is used to retrofit or maintain older SIMATIC S5 systems that require reliable serial connectivity between the processor and peripheral equipment.