The system of Shina drastically reduces the cost by eliminating system wastage through application of systems suitable for facility scales as Shina System has solutions suitable for different facility scales, and the system construction cost can be reduced through smooth construction of the system in accordance with the necessity of the user as a tool is provided for all the systems provided by Shina System to allow use of a standard communication method such as RS-485 communication, exclusive optic/general LAN, or the existing OA backbone network.