a scada system implemented with plc controllers and labview

1. Introduction A SCADA system implemented with PLC Controllers and LabVIEW Linfeng Zhang, Department of Electrical Engineering University of Bridgeport, Bridgeport, CT 06604 Supervisory control and data acquisition (SCADA) is a system of software and hardware elements that allows industrial organizations to: o Control industrial processes locally or at remote locations o Monitor, gather, and process real-time data o Directly interact with devices such as sensors, valves, pumps, motors, and more through human-machine interface (HMI) software o Record events into a log file In this work, a SCADA system is developed with the Allen Bradley Micrologix 1100 and a Labview program. The data communication is through the RSLinx OPC server. 1. Manual of the Micrologix 1100 2. Manual of the LabVIEW 3. Manual of the RSLinx and RSLogix 500 and Micro 2. System structure Step 4 add the variables for the LabVIEW project Step 5 develop the labVIEW program 3. Hardware and software Figure 2 the PLC kit 4 . Procedure for setup Figure 1 The structure of the system Fig.1 shows the structure of the SCADA. o The PLC, Micrologix 1100, controls the physical system through the sensors and actuators. o Through RsLinx OPC, the Labview program can communicate with the PLC. Thus, the process control can be conducted and monitored with an user-friendly interface. 6 . Conclusions The SCADA system is implemented with the LabVIEW and AB Micrologix controller. The future work includes the remote system and the research on the time delay in the communication. Step 1 use RSLinx to connect the PLC Step 2 develop the ladder diagram Step 3 create the OPC client in LabVIEW Allen Bradley Micrologix 1100 Labview Rslinx OPC Actuators Sensors Physical system OPC is the interoperability standard for the secure and reliable exchange of data in the industrial automation space and in other industries. It is platform independent and ensures the seamless flow of information among devices from multiple vendors. Allen Bradley RSLinx OPC Server securely communicates over Ethernet, Serial, and "Blue Hose" to many Allen Bradley protocols. Micrologix 1100 Potentiometer Switch inputs LED outputs Digital/analog inputs Analog outputs Timer status Counter status Analog input 5. Experiment results o The LabVIEW program can communicate with the Micrologix controller. o The status of the inputs, outputs, timer, and counters can be displayed in the LabVIEW program in numeric indicator or dynamic diagram. References brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by UB ScholarWorks

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1. Introduction

A SCADA system implemented with PLC Controllers and LabVIEW

Linfeng Zhang, Department of Electrical EngineeringUniversity of Bridgeport, Bridgeport, CT 06604

Supervisory control and data acquisition (SCADA) is a system of software and hardware elements that allows industrial organizations to:

o Control industrial processes locally or at remote locations

o Monitor, gather, and process real-time datao Directly interact with devices such as

sensors, valves, pumps, motors, and more through human-machine interface (HMI) software

o Record events into a log file

In this work, a SCADA system is developedwith the Allen Bradley Micrologix 1100 and aLabview program. The data communication isthrough the RSLinx OPC server.

1. Manual of the Micrologix 11002. Manual of the LabVIEW3. Manual of the RSLinx and RSLogix 500 and

Micro

2. System structure

Step 4 add the variables for the LabVIEW project

Step 5 develop the labVIEW program

3. Hardware and software

Figure 2 the PLC kit

4. Procedure for setup

Figure 1 The structure of the system

Fig.1 shows the structure of the SCADA.

o The PLC, Micrologix 1100, controls thephysical system through the sensors andactuators.

o Through RsLinx OPC, the Labview programcan communicate with the PLC.

Thus, the process control can be conductedand monitored with an user-friendly interface.

6. ConclusionsThe SCADA system is implemented with theLabVIEW and AB Micrologix controller.The future work includes the remote system andthe research on the time delay in thecommunication.

Step 1 use RSLinx to connect the PLC

Step 2 develop the ladder diagram

Step 3 create the OPC client in LabVIEW

Allen Bradley Micrologix 1100

Labview

Rslinx OPC

ActuatorsSensors

Physical system

OPC is the interoperability standard for thesecure and reliable exchange of data in theindustrial automation space and in otherindustries. It is platform independent andensures the seamless flow of informationamong devices from multiple vendors.

Allen Bradley RSLinx OPC Server securelycommunicates over Ethernet, Serial, and "BlueHose" to many Allen Bradley protocols.

Micrologix 1100

Potentiometer

Switch inputs

LED outputs

Digital/analog inputs

Analog outputs

Timer status Counter status

Analog input

5. Experiment resultso The LabVIEW program can communicate with

the Micrologix controller.o The status of the inputs, outputs, timer, and

counters can be displayed in the LabVIEWprogram in numeric indicator or dynamicdiagram.