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L-LOGICAD – IEC 61131-3 Programming
19th October 2011, 15:50
LOYTEC electronics GmbHChristoph Zens
Page 2LOYTEC electronics GmbH ©2011
Presenter
Christoph ZensResearch & DevelopmentWith LOYTEC since 2001Product manager for L-VISResponsible for IEC 61131 integration
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Overview
IEC 61131-3 Programming
Introduction Key featuresI/O data accessCEA-709 supportBACnet supportLOYTEC librariesOffline simulationOnline test
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What is IEC 61131 ?
International standard for programmable logic controllers (PLC)PLC programming languages (part 3)
Ladder diagram (LD)Function block diagram (FBD)Structured text (ST)Sequential function chart (SFC)
Cycle-based program executionFetch inputs → execute → write outputsWait for next cycle and repeat
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L-LOGICAD Key Features
Program runs on L-INX devicesEasy access to all L-INX data pointsFunctions to support event-driven logicFunctions to detect network problemsLibrary for CEA-709 data conversionLibraries for building automationOffline simulation and online testInstant reload of changed logic
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I/O Data Access
Automatic setup of I/O variablesCreate L-INX data point configurationExpose data points to L-LOGICAD
I/O support functionsUpdate notify function for incoming updatesForce update function for outgoing updatesMonitor value status (invalid, offline, …)Set value status (invalid, override, ...)
Support arrays and structured data types
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CEA-709 Support
CEA-709 support library including:All standard types and enumerationsFunctions to access structured NVsFunctions to convert between standard
enumerations and BOOL signalsSupport for LONMARK® Resource Files
Export to structured text (ST)Import into a new library in L-LOGICADUNVT types and structures are available
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BACnet Support
No structured data types, therefore no special support library required Mapping from BACnet to IEC 61131
Analog objects → REALBinary objects → BOOLMultistate objects→ ENUM
Withdraw values from objectsSet value state to invalid using the provided
I/O support function
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LOYTEC Libraries
Library for room automationControllers for HVAC, light, and sun blindsSupport functions (occupancy, alarms, ...)
Library for HVACSupports a wide range of HVAC systems Independent of network technologyUses a plant switch to control subsystemsSubsystems connect to the plant switchVisualization templates for LWEB / LVISComplete demo systems for quick start
LOYTEC electronics GmbH ©2011
AHU Demo Setup
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Global Connection
KNX IP
ZigBee
OPC XML/DA
Modbus
M-Bus
CEA-709
BACnet/IP
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Demo Application
Starting a new L-LOGICAD projectProject componentsInterface to L-INX devicesUsing data points from the L-INXOffline simulation
Testing and debugging a live systemOnline test connection to a L-INX deviceBreakpoints and single steppingMonitoring variables
Thank you for your attention!
LOYTEC electronics GmbHChristoph ZensBlumengasse 351170 Vienna, Austria
Phone: +43 (1) 4020805-0Fax +43 (1) 4020805-99Email: czens@loytec.comWeb: www.loytec.com
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