This article introduces an easy solution for controlling a set of PRONET type brushless and its servodrive via an I3 programmable PLC (Axis controlling via Modbus).

This application type can be applied to manage our linear axes.

The Modbus communication protocol is easy to set up. For our application, it sends movement commands to the VFD and collects essential information such as the current motor position.

The servodrive also has a CanOpen network card. However, its installation is unconvenient without a user overlay. Therefore, we will use it with PROMAX axes cards for more complex applications.

A- Homing

To determine the initial position during the system initialisation, you will have to execute the homing procedure.

During this procedure, the axis effector slides on a limit sensor, stops, then marks its current position on zero.

B- Axis movement

You may initiate a movement towards one or multiple positions using only one command.

You can pre-set up to 15 different movements. In addition, these positions can be actively modified via the PLC.

Technical datasheet for this type of application is available here.