Integrated Device Networks for ControlLogix® Systems

“Practical Applications for HART I/O”

• Founded in 1983• Developer of I/O, HMI and Embedded

Products• Brand Label and Spectrum Label

Products• Rockwell Automation Global Encompass

Partner• Located near Seattle, Washington, USA

• Founded in 1983• Developer of I/O, HMI and Embedded

Products• Brand Label and Spectrum Label

Products• Rockwell Automation Global Encompass

Partner• Located near Seattle, Washington, USA

Spectrum Controls, Inc.

Benefits of an Integrated Device Network

CommissioningEfficient Documentation

Simplified Device Configuration

OperationReal-time diagnostics

Regulatory Compliance (FDA, EPA…)

MaintenanceAutomated Predictive Maintenance

Audit Trail / Self Documentation

Definition of Process Networks

Enterprise Networks - protocols that focus on IT applications (LAN, WAN, Ethernet…)

Control Networks - protocols typically used to connect controllers and I/O systems (ControlNet, Ethernet/IP, FF-HSE, Modbus, Profibus-DP)

Device Networks - protocols originally focused on process instrumentation (Foundation Fieldbus-H1, HART, Profibus-PA)

Sensor Networks - protocols initially designed to support discrete I/O (AS-I, CAN, DeviceNet, Interbus, LON)

ProtocolsThe network type does not necessarily define the protocol.Separation of protocols and network type is often unclear, many cross into several classifications.

Engineering Workstation

RSLogix / LogixRSView / RSMACC

Asset Management

AMS / DMS/ FieldCare

Visualization

RSView or PanelView

ENet

Change Management & Maintenance

Integrated Architecture

Hand Calibrator

ENet or CNet

Enterprise Client

Applications

ControlLogix Analog+HART I/O

HARTField Devices

Analogand

HARTData

UNIQUE COMMUNICATION SOLUTION

The HART Protocol supports two way digital communications and is designed to complement traditional 4-20mA analog signal.

Analog Signal

HART - Highway Addressable Remote Transducer

HART Primer

Pre-defined Commands

• Common Practice• General Purpose• Device Specific

Large Installation Base

Worldwide Support

Existing acquisition methods

• Handheld CommunicatorLimited to point-to-point connection!

Requires you to be in the field!• Clip-on Serial Modem

Existing acquisition methods

• HART MultiplexerRequires additional hardware!

Requires additional wiring!

4-2

0 m

A

Evolution of HART Technology

• 8 Channels of Analog Input or Output• Each channel selectable… Voltage Current Current + HART

• Versatile Communication Options• Compatible with PLX and CLX• HART compliant (Point to Point)• Standard wiring / terminal blocks

• Connectivity Software

1756sc-IF8H - Analog Input with HART1756sc-OF8H - Analog Output with HART

I/O Block Diagram

Proven analog technology 16 to 21 bit resolution

HART modem services are independent

HART and Analog data on the backplane

ControlNet Compliant Communication

Hardware Interface

The HART I/O modules reside within a Logix PLC chassis.

The I/Os are fully ControlNet compliant.

This means data is accessed via - scan-based communication - unconnected messaging ( processor independent )

Scan-BasedDevice Information

PV,SV,TV,FVAutomatic Connection

Read Access

Unconnected MessageDevice Information

PV,SV,TV,FV

Extended HART Data

Vendor Specific Commands

Read/Write Access

I/O Communications: Scan-based

The modules are configured using RSLogix 5000Scan based data is accessed via your ladder logic using module tags.

You have access to: Analog value/controlDevice Information HART PV, SV, TV, FVHART “Packet” DataFour user defined slot variables

You have access to key data… which updates automatically

I/O Communications: Scan-based

Scan based data is accessed via your ladder logic using module tags.

Note that the HART PV, SV, TV, FV are available without the typical command / response dialog.

I/O Coms: Unconnected Messaging

The module will accept and queue unconnected message requests.

These messages may be generated by 1. Message block in your ladder logic 2. Your Application Layer3. Another ControlNet Node

You have access to: ALL DATA Analog value/control HART PV, SV, TV, FV Common Practice Commands Device Specific Commands

CIP

Client

Control and Information Protocol

Enterprise Client

Applications

ControlLogix w/ HART I/O

HARTField Devices

Client Software

There are applications for everyaspect of system managementand operation.

                     

Device ManagementApplication

Software Components

Spectrum ControlsAnalog+HARTI/O Gateway

Rockwell SoftwareRSLinx

+

Workstation

HA

RT

I/OH

AR

T I/O

Enterprise Client

Applications

+

How CONNECTS works…

Enterprise Client

Applications

RSLinx

RS-232 Interface

Asset ManagementSoftware Interface

Communication ControllerConfiguration File

User Interface

Activity LogHART I/OInterface

Network Interface(Ethernet, ControlNet)

Enterprise Client

Applications

ControlLogix w/ HART I/O

HARTField Devices

HART Field Devices

Highly Standardized

Large Installation Base

Less costly

Instrument HART Data

• PV: Mass Flow Rate• SV: Totalizer 1• TV: Density• FV: Temperature• Volume Flow• Std. Volume Flow• Target Flow• Carrier Flow• Calculated Density• Totalizer 2

Endress+Hauser

Mass Flow Meter

Metso Control Valve• PV: Percent Travel• SV: Travel Setpoint• TV: Temperature• FV: Supply Pressure• Status Bytes

RAM Fail

Pressure Sensor Fail

Temperature Sensor Fail

Position Sensor Fail

Read

Read

• Set Flow Units• Reset Totalizers• Set Zero & Full Scale Range• Change K Factor• Change Pipe Diameter• Set Flow Direction• Set “Low Flow Cutoff”• Make Density Adjustments

Write

• Perform Diagnostic Tests• Set Zero & Span• Adjust For Mechanical Wear• Adjust Valve Sensitivity

Write

Practical Applications

CommissioningEfficient Documentation

Simplified Device Configuration

OperationReal-time diagnostics

Regulatory Compliance (FDA, EPA…)

MaintenanceAutomated Predictive Maintenance

Audit Trail / Self Documentation

Commissioning

Quickly verify and document device configuration and calibration, assure the integrity of wiring, and confirm the operational capability of every control loop – all from one central location.

Verify and tune valve performance by performing loop checks, via the network, and read back position.

Generate and archive system configuration data more quickly.

Operation with HART

Normal Operation 4-20mA PV: Percent Travel SV: Travel Set Point TV: Temperature FV: Supply Pressure Set Zero & Span Adjust For Mechanical Wear Adjust Valve Sensitivity

Diagnostics / Maintenance 4-20mA Status Byte RAM Fail Pressure Sensor Fail Temp Sensor Fail Position Sensor Fail Perform Diagnostic Tests Set Zero & Span Adjust For Mechanical Wear Adjust Valve Sensitivity

LGX

CPU

HART

ENet

Operation without HART

TemperaturePressure Flow

Analog data from three field devicesHART data is not being usedPLC performs all calculations

LGX

CPU

ENet

Dedicated field devicesDedicated I/O modulesMore loops to wire

Operation with HART

Read Data

PV: Mass Flow RateSV: Totalizer 1TV: DensityFV: TemperatureVolume FlowStd. Volume FlowTarget FlowCarrier FlowCalculated DensityTotalizer 2

Write Data

Set Flow UnitsReset TotalizersSet Zero & Full Scale Change K FactorChange Pipe DiameterSet Flow DirectionSet Low Flow CutoffMake Density Adjustments

Simplified Installation/WiringBetter Quality DataMore Diagnostic Information

Maintenance with HART

Device Management Workstation vs. Field

Scheduling Reduce downtime

System Backup Fast Recovery

Historical Reference Identify Trends Determine Reliability

Conclusion

+

Connectivity

HART I/O

Commissioning

Operation

Maintenance

Integrated HART Networks are:

RealScaleableCost Effective