Interfacing of PLC with NI-LabVIEW using Modbus Protocol

Abstract

This paper focuses on interfacing of high end
Programmable Logic Controller with NI-LabVIEW using
Modbus RTU protocol. The aim behind doing this is to develop a
platform to enable real-time process control, data logging,
analysis etc. As on today PLC is the most widely used controller
in automation, process control etc. In industries, there is a
demand of supervisory control and data acquisition along with
the PLC based process control. The paper focuses on developing
communication between PLC and NI-LabVIEW (evaluation
version), so that a low cost SCADA platform can be de veloped.
In order to implement the idea, AB micro 830 PLC is used.