PLC Expansion BD Board, or Board Expansion (BD) for PLC, is a small expansion board that directly installs onto the PLC CPU to enhance specific capabilities such as increasing communication ports, expanding inputs/outputs, or adding special functions without requiring external expansion modules.
Guidelines for Using PLC Expansion BD Boards
It can only be used with PLC models that support BD slots.
Multiple boards cannot be installed simultaneously (depending on the model).
Carefully check the PLC manual to determine which BD versions are supported for efficient installation.