Implementation of an electronic circuit to study the performance parameters of the MODBUS-RTU protocol and verify its model ability using the OPNET simulation

Abstract

Industrial protocols exchange data between different automation devices. MODBUS is the most widely used industrial protocol. This paper presented a practical circuit consisting of two units that exchange data with each other according to the MODBUS-RTU protocol in order to study performance parameters such as (frame delay, frame rate) and to verify the model ability of this type of protocol using the OPNET simulator by conducting comparisons between the values ​​of the studied parameters. The results showed high performance of the MODBUS-RTU protocol in automating industrial processes and confirmed the ability of the OPNET simulator to characterize the behavior of networks operating on the studied protocol.