Siemens 6ES5430-7LA12 PLC Module

The Siemens 6ES5430-7LA12 is a 32-channel digital input module (type 430) for SIMATIC S5, designed for use with S5-115U/F controllers. It provides 32 isolated digital inputs at 24 V DC, enabling the expansion of an S5 system’s input capabilities while maintaining signal isolation for noise immunity. When installed in an S5 backplane, it feeds clean, isolated 24 V DC signals to the CPU for reliable discrete-input logic and monitoring in automation tasks such as machine interlocks, start/stop sensing, and status indication. The module measures 43 x 303 x 187 mm and weighs approximately 700 g, aligning with standard S5-form factor in many enclosures. This 6ES5430-7LA12 part is documented as 32 DI, 24 V DC, isolated, for use with the S5-115U/F family, making it a sanctioned spare or upgrade for legacy Siemens S5 installations. Part number 6ES5430-7LA12.