the role of module

Modular used to separate, organize and packaged software. Each module performs a specific sub-function, all the modules are assembled by some method, as a whole, complete system required functions.
plc moduleshas the following basic attributes: external characteristics of the interface, functions, logic, status, functional status and interface modules reflect the logic reflect its internal characteristics.
In the structure of the system, the modules are combined decomposition and replacement unit. Modularity is a complex system can be decomposed into ways to better manage modules. It can be set by different components of different functions, to decompose the problem into a plurality of small independent, interacting components, to deal with complex, large-scale software.

Run mode
1, the operating mode to work independently
Each module can work independently, even a single set of module failure does not affect the whole system work.
2. Start function classification
When each group of modules to reach full capacity the system will automatically activate another set of modules to ensure the system is always output to match actual demand and to ensure the efficient operation of each plc output module, but also save resources and improve efficiency.