Multiple Linear Guide Actuator (LGA) Controller Based on Modbus RTU

The number of various kinds of products installed in plants in the industry makes some equipment require various communication protocols for data transmission on different lines. In this study, a device that can communicate with other devices has been created using an industry-standard communication protocol, namely the Modbus RTU protocol. Modbus is an open-source and legal communication protocol. In the design of this controller module device using the Atmega 2560 microcontroller chip, the optoisolator safety circuit for the Linear Guide Actuator. and the GP 2Y0A02K0F sensor are used to monitor the movement position of the two Linear Guide Actuators. The control system used is based on a mathematical algorithm, namely Bresenham and the Modbus protocol. From the research, it is found that the address of the write holding register (sending instructions from the server to the client) and the read holding register of commands that are read on the controller module (client) where every 1000 micro steps movement is equivalent to a shift of 1.5 cm and is taken in an average time of 1.2 seconds. The movement has been validated using a ruler and the GP 2Y020YK0F sensor. The result is that both Linear Guide Actuators can move correctly according to the parameters used, namely the input steps value on the server in the form of PC Modbus software.