plc cpu modules capture signal input module

General PLC plc cpu modules have output input that you said body as a whole, are inseparable, the number of inputs and outputs on the body is fixed, but can be extended by the input and output modules, is the  cpu modules plc main External input and output modules, the number of input and output modules of different brands and models of PLC can plug is not the same,
There is another elephant Mitsubishi Q series PLC, is a power supply module, CPU module, input modules, output modules and other components, each module separately, according to the needs of different features free combination. plc cpu modules is a single host, if a program needs to touch temperature control or analog control, or to buy a module temperature module or analog modules are connected to the PLC side, if the module is  output module plc connected to more than a turn and side , No. module from the PLC and the edge is first started writing, it is Mitsubishi regulations,
Collection, such as temperature module must have a temperature sensor, temperature sensor signals to the module, temperature control, etc. By changing the procedures described here do not.
Mitsubishi module has three interfaces, you  programmable logic controller can choose with, respectively, analog output, voltage output, current output, you can choose the three.