Novel techniques while developing on the WinCC OA

Experience with the UCPC library.

Outline

• What is UCPC• CPC6 ideas• CPC6 technics

UCPC Advanced Course: General Introduction3

UNICOS and UCPCUNICOS is a framework to create control applications UCPC: A basic package (Continuous Process Control) to develop integrated

process control applications.

UNICORE

UCPC package

PLCs CPC PLCs (non CPC)

Application packages(PIC, WIC,

CIS,…)

Application packages

(CIET, SURVEY, QPS, ..)

Control layer

UNICOS

Supervision layer

Industrial PC

HVAC

Process Control applications

LHC Collimator

s Interlocks

LHC Gas Control

LHC cryogenics

CERN, Sept/2012

What is CPC

Continuous Process Control is the set of devices implemented in the SCADA (WinCC OA, WinCC Flexible) and PLC (Siemens, Schneider, CoDeSyS)– IO objects (AnalogInput, DigitalOutput, …)– Interface objects (AnalogParameter, WordStatus,

…)– Field objects (Analog, OnOff, MassFlowController,

…)– Control Objects (PCO, PID, AnalogAlarm, …)

What is UCPC WinCC OA

It is a CPC device’s implementation in WinCC OA:– Reuse UNICOS/FW components– Follow UNICOS/FW convention

Axioms/aims

• Keep all scripts in the .ctl, not .pnl• Minimize device implementation code• Use spaces not tabs

Aims

• Keep all scripts in the .ctl, not .pnl– Minimize changeable code in panels– Using g_params mapping instead dedicated

variables:• Old: g_sPosStUnit, g_sPosStFormat, …• New: g_params mapping

• Minimize device implementation code• Use spaces not tabs

Aims

• Keep all scripts in the .ctl, not .pnl• Minimize device implementation code– Use generic UCPC functions in device

implementations, e.g. powerful UCPC core• Use spaces not tabs

Device ctrl scripts

CPC5 CPC6 CPC6 templated0

5000

10000

15000

20000

25000

30000

35000

40000

45000

deviceCPC core

Line

s of

cod

e

Development workflow

Package

PVSSBootstrapper

flex extractor

unPackageCreation

PVSS Project

TemplateDTI

Target: control script

UCPC is the set of device implementations.The device implementation:• Importation and exportation• Animation– Widget– Faceplate– Right click menu

• Access rights• Configuration, …

Device creation effort

ImportationAnimationOthers

PRACTICAL PART

Let’s talk about control code:Outline:– Importation– Animation

Importation: CPC5

• Constants that describe importation line• Generic check function• Front-End specific check functions• Generic set function• Front-End specific set functions

Importation: CPC6

• Constants that describe importation line– Few additional constants for shared fields

• Configuration function– For each DPE specify it properties

• Core does all the work– Based on simple atomic functions– Proxy to the UNICOS core when possible

Importation: CPC5 - set DPEunConfigGenericFunctions_setFloatIntBlock(dsConfigs,PVSS_MODBUS_FLOAT,makeDynString("PosSt", "OutOVSt", "AuPosRSt", "MPosRSt"),makeDynInt(UN_CONFIG_ANALOG_ADDRESS_POSST, UN_CONFIG_ANALOG_ADDRESS_OUTOVST, UN_CONFIG_ANALOG_ADDRESS_AUPOSRST, UN_CONFIG_ANALOG_ADDRESS_MPOSRST),makeDynString("MPosR", "PLiOn", "PLiOff"),makeDynInt(UN_CONFIG_ANALOG_ADDRESS_MPOSR, UN_CONFIG_ANALOG_ADDRESS_PLION, UN_CONFIG_ANALOG_ADDRESS_PLIOFF),makeDynInt(UN_CONFIG_ANALOG_UNIT, UN_CONFIG_ANALOG_FORMAT, UN_CONFIG_ANALOG_DEADBANDE, UN_CONFIG_ANALOG_DEADBANDE_TYPE),makeDynInt(UN_CONFIG_ANALOG_RANGEMIN, UN_CONFIG_ANALOG_RANGEMAX),makeDynString("PosSt", "OutOVSt"),makeDynInt(UN_CONFIG_ANALOG_ARCHIVE_ACTIVE, UN_CONFIG_ANALOG_ARCHIVE_TIME_FILTER),exceptionInfo);

Importation: CPC6 – set DPE

mappingClear(props);props["hasUnit"] = true;props["hasFormat"] = true;props["hasSmooth"] = true;props["hasArchive"] = true;props["hasPvRange"] = true;props["address"] = ".ProcessInput.PosSt";props["dataType"] = CPC_FLOAT;config["PosSt"] = props;

Device check/set algorithm

Setup DPEForeach DPE

setDeviceConfig(aDevice) addressunit

formatsmoothrange

descriptionarchive

alert5 range alert

Setup device

parametersmeta info

sms categoriessms messagemask event

Device specific setup (if define)

PRACTICAL PART II

Outline:– Importation– Animation

Animation: PVSS level

• dpConnect(function, dpe1, dpe2, …)• function(string dpe1_name, int dpe1_value,

string dpe2_name, bool dpe2_value,…)

• dpDisconnect(function, dpe1, dpe2, …)Problems:• DPE list should be consistent• Proxy function in case of floating amount of dpes

Animation: UNICOS level

Unicos requires a callback for system integrity.• Device needs to implement:– RegisterCB(string sDp, bool bSystemConnected) – Disconnection animation

Animation: alert handler

In case when device contains alert handler that could be modified by user• Device needs to implement:– PVSS animation routine on alert handler lock state

Animation: customizable device

In case when device could not have some dpe configured (for example, interlocks could be disabled)• Device needs to implement:– Set of connect/disconnect functions for each

possible combination of configured dpes– Set of animation functions (normally these

functions proxy to the generic one)

Animation: worst case

• Register callback– Connect alert_hdl– Disconnect alert_hdl

• Animate alert_hdl– Connect set1– Disconnect set1– Connect set2– Disconnect set2

• Animate set1 (proxy)• Animate set2• Animate disconnection

Refactored animation

What I care about in device implementation:• List of DPEs that needs for animation• Animation itself

Animation: CPC6

• Function to define DPE list for animation– Insure connect/disconnect operates with the same

dpes • Animation function– Does disconnection animation for free– Clear API for animation

• Static init function– Use one mapping variable (key-value)– Insure that no wrong access in the implementation

Animation: CPC5 – faceplate/PosStif(g_bSystemConnected) unGenericObject_DisplayValue(g_sPosStFormat, g_sPosStUnit, fPosSt, "StatusPosition", "unDisplayValue_Status", bPosStInvalid || (!bSystemIntegrityAlarmEnabled) || (iValAlarm > c_unSystemIntegrity_no_alarm_value));

Animation: CPC6 – faceplate/PosStcpcFaceplate_animateOnlineValue(dpes, values, "PosSt", g_params["PosStUnit"], g_params["PosStFormat"], "cpcColor_Faceplate_Status");

cpcFaceplate_animateAnalogValue(dpes, values, "PosSt", "PosSt", "cpcColor_Faceplate_Status");