Expansion of Inputs and Outputs in the S7-200 Series PLC
Expansion of Inputs/Outputs in the S7-200 Series PLC Core Concept: Modular Expansion The S7-200 PLC adopts amodular structure for expansion. Its basic unit (CPU module) comes with a fixed number of I/O points (referred to asbase I/O). When these I/O points are insufficient, dedicatedexpansion modules can be connected through the expansion interface on the right … Read more