Please confirm with the supplier: Model / reference, Key specifications / compatibility, Samples, Export markets, Supply capacity.
Specifications
There are two types of mechanical design for PLC systems. A single box, or
a brick is a small programmable controller that fits all units and interfaces into one compact casing, although,
typically, additional expansion modules for inputs and outputs are available. Second design type – a modular PLC –
has a chassis (also called a rack) that provides space for modules with different functions, such as power supply,
processor, selection of I/O modules and communication interfaces – which all can be customized for the particular application.[13] Several racks can be administered by a single processor, and may have thousands of inputs and outputs. Either a special high speed serial I/O link or comparable communication
method is used so that racks can be distributed away from the processor, reducing the wiring costs for large plants. Options are also available to mount I/O points directly to the machine and utilize
quick disconnecting cables to sensors and valves, saving time for wiring and replacing components.[citation needed]