Information exchange over industrial network with discrete signal input/output modules ADAM-4055

This work is concerned on problems of information exchange organization between the host computer and discrete signal remote and distributed input/output modules ADAM-4055 (Advantech Co., Ltd., Taiwan) over computer distributed control and data acquisition system. Here host computer and modules are joined by industrial network based on RS-485 interface by using ASCII or Modbus protocol. The problem of data input/output between host computer and ADAM-4000 modules based on industrial network is solved by command issuing by host and following receiving the response from addressable module. We considered command list used for operating with discrete signal input/output modules, analyzed their structure, and developed application providing any command input to ADAM-4055 module and response receiving and visualization.