Siemens 6ES5943-7UB11 is a CPU943B processing module for the SIMATIC S5-115U PLC, delivering 48 KB of RAM and a single programmer port (PG/TTY) for loading programs and diagnostics. It serves as the central processing unit in S5-115U installations and is documented under Siemens order numbers 6ES5943-7UB11 and 6ES5-943-7UB11. As a CPU943B belonging to the SIMATIC S5 family, it is designed to be mounted in the S5-115U backplane to execute control logic for industrial automation applications.
