Founder's Profile

Mr. Vishal Majmundar

Mr. Vishal Majmundar is an Electrical Engineer with 13 years of experience in the area of Industrial automation/ Factory automation engineering as an Application/Automation Engineer.
He is having a rich exposure in Electrical Installation & Commissioning of automated machines, Program development& Commissioning of PLC, HMI, drives& motion controller.
He has started a company named ‘NiVish Automation – Industrial Automation Solution & Training’ from July 2021 onwards where he is providing solutions in Industrial Automation. He is supplying automation products like Electric Control Panels, PLC, Drives, Motion Controller, HMI, Sensors, IO Link devices, etc along with services like Electrical Designing & Engineering, Control panel wiring and Field wiring, Technical support, Troubleshooting, Installation & Commissioning and Trainings in industrial automation field.
He is providing automation solutions in various industries like Automatic Car Parking Systems, Printing, Packaging, Textile, Material Handling, Plastics, Pharmaceuticals, Customized Automation, etc.
He is dealing with Automation Products of various well-known make like Siemens, ABB, Schneider, Festo, Turck, P&F, Murr, Bosch Rexrorth, B&R Automation, Beckhoff, Delta etc. as per customer requirements.
He is also giving Trainings to Engineering college students and OEM & End User Engineers in this field of Industrial Automation on various subjects. His previous associations for job were with organizations like Thyssenkrupp System Engineering, ATE Enterprises Pvt Ltd, Siemens Ltd, Modtech Machines Pvt. Ltd. and Multipack System Pvt. Ltd.
Last Year his company had successfully completed their 4 Projects with i-Stron India Pvt Ltd for Automatic Car Parking System and 6 various Automatic Car Parking Projects are ongoing for same OEM in this year.

Work Experience :

Organization Introduction :

Thyssenkrupp System Engineering is a leading manufacturing solution provider to Automotive Industry. It is into manufacturing of following Automotive Assembly Lines:
  • Powertrain Assembly lines which includes Engine Assembly, Axle Transmission Assembly and Transmission Assembly.
  • Powertrain Testing that includes End of line Test Engine, Test Transmission, Test Mechatronic & Test Inverter, Turbocharger Test, E-drive Test, IQA Integrated Quality Assurance, UPS64 and Surface Scan.
  • Carbody Assembly which includes Closure lines, Side panel lines, Framing System & Panel hang-on line.
  • Final Assembly that includes Marriage System and Sealing Application.

Department :

Software & Commissioning – Powertrain Solutions.
Here we are developing software for manufacturing solution for power train assembly lines, Commissioning of same at our factory and then at customer factory.

Designation :

Software & Commissioning Engineer

Job Responsibilities :

Handling Powertrain Assembly lines Projects:
  • PLC, Motion Controller, Drives and HMI Program development and Commissioning.
    • Working on both type of controllers- Logic controllers & Motion controllers for programming and Commissioning for various Automotive applications.
    • Configuration & Programming of VFD & Servo Drives.
    • Speed & Position controlling of Induction motor and Servo motors. Controlling Induction motors through Simocode.
    • Electromechanical/Physics calculations required in programming.
    • Configuration & Commissioning of Industry 4.0 components such as IO Link modules, IO Link Sensors with their specific software.
  • Coordinating with customer for execution of their project. Understanding their requirements in their project and acting accordingly.
  • Ensuring proper wiring of machine electrical panel& then Power up of the same.
  • Optimization and Tuning of Servo Drives & VFD.
  • Visit client site for Commissioning, modification, troubleshooting and technical Support regarding Application, Automation(PLC, HMI, DRIVES) and Electrical area for their machines.
  • Technical Automation Product Training and Machine training to customer’s engineers after completion of Commissioning.

Projects Worked On :

  • 1. Semi-Auto Station for Piston Installation for 4-Stroke and 3-Stroke Engine in Engine Assembly line for Volvo & Eicher.
    This is a Semi-Auto station with operator intervention for piston insertion. Process flow for 4-Stroke Engineis as follows :
    • Pallet with Engine block comes to this station via Conveyor, Vertical Slide control by Servo motor comes down engine block is gripped via mechanical gripper operated by pneumatic.
    • Then vertical slide goes to oiling position for bore oiling. Engine block rotate to 145 deg and oiling slide control by Festo liner slide operated by servo motor moves to all 4 bores along with pneumatic cylinder with roto sprayer which sprays the oil in the bore after cylinder moves forward in the bore.
    • Then engine rotate to and vertical slide moves to piston insertion position. Vertical slide movement and Engine rotation is controlled via Siemens Servo motor which is controlled by Sinamics S120 Drives.
    • Operator enter into light curtain and insert piston in the bore.
    • Then machine check piston orientation via scanner mounted on festo slide and check piston ring presence via cognex laser sensor mounted on another festo slide.
    • Then engine rotate to conrod cap tightening position where operator fix the conrod caps and tight it via nutrunner with 40Nm torque and 120 deg angle via Atlas Copco Nutrunner.
    • Then Engine block is placed on pin post on pallet, stopper moves down and pallet goes to next station for next process.
    • PLC process data and command are synchronized with MES System.
  • 2. Supporting for Commissioning of whole Engine Assembly Line consisting of 25 individual Stations and 1 Automatic Robotic Cell for Engine Head Assembly.
    • It was BS6Commercial Vehicle 3-Cyl & 4-Cyl Engine Assembly Line. All the station for engine assembly are divided into 3 parts – Main Line-1, Main Line-2 and Cylinder Head Robotic Cell for Engine Head Assembly.
    • Main Line-1 consist of 13 Manual/Auto Stations and Main Line-2 consist of 12 Manual/Auto Stations.
    • For Cylinder Head Assembly 1 separate Robotic Cell comprising of 2 Robots – 1 Robot for Child part assembly and another robot for fetching engine head to different stations of CH Cell was there.
    • CH Cell consist of 7 automatic station for different processes required for Head assembly.
  • 3. Front Axle Assembly line in Axle line transmission assembly for Volkswagen.
    • This is a zone line where 7 manual station are there where manual operation has been done. Loading and Unloading lifter are there which is controlled by SEW Servo motor which was controlled by SEW Drive. These lifter will load the pallet from bottom to top conveyor and unload the pallet from top to bottom conveyor.
    • On Top Conveyor 6 manual zone station are there and one station OP40 is auto station, which is installed perpendicular to these all zone station. For transferring pallet from zone to OP40 there is a turntable which is operated by SEW Motor with Siemens encoder externally mounted directly on load.
    • On every station pallet is released by operator acknowledgement after he completes his task on that station.
    • PLC process data and command are synchronized with Synatec system.
  • 4. Rear Axle Assembly line in Axle line transmission assembly for Volkswagen.
    • This is same as Front Axle the major difference is there is Lift & Turn Station after Loading Lifter and before Unloading Lifter which change the orientation of pallet from 0 to 90 deg and vice a versa.
  • 5. Supporting for Commissioning of Wheel Head Assembly Line for Volkswagen.
    • It consist of 7 Manual Stations and 4 Automatic Station undertaking different processes for assembly and testing required for Wheel head Assembly.

Organization Introduction :

Established in 1939, A.T.E. has evolved into a multifaceted engineering group offering worldclass products and solutions spanning several segments. A.T.E.’s businesses encompass manufacturing, industrial sales, distribution, and service and have gained expertise in handling turnkey projects.
ATE started out with solutions for textile engineering and expanded to cooling, wastewater, energy efficiency, machine-to-machine, flow technology, print and packaging, and value enhancing systems.

Department :

Textile Engineering Group (Processing) , Automation Projects & Upgradation.

Job Responsibilities :

  • Business Development for electrical and automation Upgradation of textile machine projects.
  • Handling Textile Processing machine projects :-
    • PLC, Motion Controller, Drives and HMI Programming and Commissioning.
      • Programming of Simatic logic controllers (S7-300) via Step-7, Sinamics drives via Starter and Lenze AC Drives via Lenze Engineering software.
      • Commissioning of Siemens Plc & Drives, Lenze Drive and Siemens Industrial PC/HMI.
      • Speed & Position Synchronization of Induction motor, Synchronous motors and Servo motors.
      • Tension, Speed, Torque and Temperature Controlling through efficient use of PID.
      • Electromechanical/Physics calculations required in programming.
    • Coordinating with customer for execution of their project.
    • Ensuring proper wiring of machine electrical panel & then Power up of the same.
    • Visit client site for Electrical Installation, Commissioning, modification, troubleshooting and technical Support regarding Application, Automation(PLC, HMI, SCADA, DRIVES & MOTION Control) and Electrical area for their machines.

Projects Worked On :

  • 1. Textile Processing – Pad Steam Dyeing Machine of Goller.
    Here dying on fabric is take place. Fabric is passed through padding trough and then to Steamer for fixation of dye colour and then to washing tank and then to VDR(Vertical drying Range) and finally rewinded through surface winder.
  • 2. Textile Processing – Mercerizer Machine of Goller.
    Mercerizing is done to bring luster in fabric. The process includes impregnation of material through cold caustic solution, Stretching while fabric is still impregnated in caustic solution and Washing off the caustic soda from the fabric while keeping the fabric still in stretch state.
  • 3. Textile Processing – Continuous Bleaching Range of Goller and Benninger
    Here fabrics is passed through sodium hydrochloride, sodium chlorite or hydrogen peroxide for Oxidative bleaching and for Reductive bleaching fabric is passed through sodium hydrosulphite, a powerful reducing agent.
  • 4. Textile Printing – Digital Printing Machine of Zimmer.
    Got international exposure to get trained at Zimmer, Austria for Digital Printing Machine. I got trained for Colaris4 and Chromojet digital printing machine for printing on Carpet, bedsheets and towels. Then I have commissioned towel printing machine for Welspun India and Carpet printing machine for Raj Overseas.

Organization Introduction :

Siemens India is a technology powerhouse that has stood for engineering excellence, innovation, quality and reliability since 1922. The company focuses on the areas of electrification, automation and digitalization.
Siemens is a pioneer in infrastructure solutions and automation and software solutions for industry.

Department :

Digital Factory , Factory Automation , Application Centre.
Here we are developing program for the automated machine application, preparing Electric panel drawings and then commissioning of that application at Customer’s Place.

Designation :

Executive Commissioning Engineer responsible for Digital factory – factory automation – application centre (R&D Division) department

Job Responsibilities :

Handling Automated machines projects :-
  • PLC, Motion Controller, Drives and HMI Programming and Commissioning
    • Working on both type of controllers- Logic controllers & Motion controllers for programming and Commissioning for various applications.
    • Synchronization of Master & Slave drives with CamIn & GearIn. Position and Speed synchronization between different Real and Virtual Axes.
    • Configuration& Programming of AC & Servo Drives via Sinamics software& Motion Control Simotion via Simotion Scout software. And that of PLC and HMI via TIA Portal, Step 7 and Wicc Flexible 2008 softwares.
    • Speed & Position Synchronization of Induction motor, Synchronous motors and Servo motors.
    • Tension, Speed, Torque and Temperature Controlling through efficient use of PID.
    • Electromechanical/Physics calculations required in programming.
  • Attending Kick off meetings with the customer for finalizing of machine philosophy and function to be implemented and I/Os.
  • Coordinating with customer for execution of their project. Understanding their requirements in their project and acting accordingly.
  • Ensuring proper wiring of machine electrical panel & then Power up of the same.
  • Optimization and Tuning of Servo Drives & AC Drives.
  • Visit client site for Electrical Installation, Commissioning, modification, troubleshooting and technical Support regarding Application, Automation(PLC, HMI, SCADA, DRIVES & MOTION Control) and Electrical area for their machines.

Projects Worked On :

  • 1. Solventless & Solventbase Lamination Machine Project of SA Automation Pvt Ltd.
    Here Eight Axes are there, Primary Unwinder A&B, Secondary Unwinder A&B, Rewinder A&B, Coater and Laminator. Web is unwinded at Primary Unwinder, coating of adhesive take place at Coater. Another web from Secondary Unwinder is combined at Laminator with the help of heat & pressure. Combined web is then rewinded at Rewinder section. Splicing take place between A & B of Primary Unwinder, Secondary Unwinder and Rewinder.Tension controlling and Synchronization between all axes is main function for proper winding and Lamination of material. Material can be BOPP or Polyester. In Solvent base Adhesive is liquid and drying process is require while in Solvent less adhesive is kind of adhelite.
  • 2. Slitter machine of Kody Equipments Pvt Ltd.
    Here slitting of one web in done in two webs with the help of fixed cutter. Here also tension control and speed synchronization is important.
  • 3. Dry Laminator project of Raulimex Pvt Ltd.
    This is same as Solventbase laminator machine.
  • 4. Hot melt coating machine of Vimalachal Printpack Pvt Ltd.
    It is same as Solventless lamination machine. Only difference is positon correction take palce at Coater through superimpose functionality of Motion Control. Here correction command is given by ARC(Automatic Registration Control).
  • 5. Textile Yarn Dyeing & Sizing Machine of Jupiter Pvt ltd.
    Here dyeing and strengthening of cotton yarn take place. Unwinding of material, dyeing and Strengthening of cotton yarn in center station and then Rewinding of that material.
  • 6. Rotogravoure Printing machine MLS (Mechanical Line Shaft) and ELS (Electronic Line Shaft) of Vimalachal Printpack Pvt Ltd.
    Here printing on web in done. Here 12 Axes are there Unwinder, Infeed, 8 Print Units station, Outfeed and Rewinder. Registration(Printmark stability) has to maintain at print units for proper printing. Position correction at Print Units and tension controlling between the Axes is main functionality of this Machine. In MLS all printunits are coupled mechanically and driven by only one Main motor while in ELS all pritunits are coupled electrically and drive by individual motors. In MLS position correction of printunits take place mechanically while in ELS position correction of printunits take place electricallythrough superimposed functionality of Motion Control.
  • 7. Flexographic Printing Machine of J.P.Extrusion Pvt Ltd.
    This is same as Rotogravoure Printing ELS machine. Difference is, here graving of image is not done on print cylinder instead image is embrossed on print cylinder.
  • 8. Robotic Textile Sectional Warping Machine and Sizing Machine of Prashant Westpoint, Prashant Gamatex & Prashant Rastoni Pvt Ltd.
    Here winding of cotton yarn take place in different section with proper tension control. Robotic arm is there of 3 Axes for leasing of yarn purpose.
  • 9. Register Coating Machine of SA Automation Pvt Ltd.
    This is same as Hot Melt Coating machine only difference is Position correction input is not given by ARC instead through photocell correction input is obtained through logic written in Motion Controller.

Designation :

Automation-Electrical Application Engineer

Job Responsibilities :

Handling Automated machines projects :-
  • PLC, Motion Controller, Drives and HMI/Display/Operator interface Programming & Commissioning
    • Working on both type of controllers- Logic controllers & Motion controllers.
    • Programming related to various machine functions.
    • Synchronization of Master & Slave drives with CamIn & GearIn.
    • Configuration of AC drive, Servo servo drive, Encoder and other instrumentation in program.
    • Physics calculations required in programming.
    • Efficiently use of functional block in program.
  • Understanding client’s requirements and acting accordingly.
  • Co-ordinating with Electrical & Mechanical design department for the project.
  • Study of Parker, AllenBradely, B&R & Delta automation products & softwares and applying that thing to our machines.
  • Ensuring proper wiring of machine electrical panel.
  • Troubleshooting of machine(From all perspective- Electrical, Automation & Mechanical).
  • Electrical Control & Power wiring drawing analyzing and approving.
  • Ensuring proper electrical valves operation for hydraulics & pneumatics.
  • Configuration, Optimization and Tuning of Servo Drives & AC Drives.
  • Visit client site for Electrical Installation, modification, troubleshooting, commissioning & after sales support of our machines.

Projects Worked On :

  • 1. KB Textile & Anas Automation-Automated Textile Flat Bed Printing Machine.
    In this, I have to develop whole automation system for printing on cloth. For these synchronization of two rotary servo motor for motion of belt & two Electric Thrust cylinder(Cylinder driven by servo motor) for lifting up the colour stroke has to be done. So total synchronization of four servo drives have to be done. An automation cycle has to be developed according to customer’s requirement. We have used Servo motor, Servo drive cum controller & HMI of Parker.
  • 2. Ruchisoya-Pick & Place Deflashing machine.
    Here plastic bottles coming from primary machine is picked and placed on conveyor. Then that bottle goes for deflashing where it is clamped and deflashed with the help of rotary blade which rotates by stepper motor. Many other functions are provided in this whole automation system. Here we have used Delta PLC & HMI.
  • 3. Kohinoor-Linear Servo system for Diamond cutting.
    Here we have provided Parker 2 Axes linear servo & motor. We have to synchronizethis linear servo system with their PC based controller.
  • 4. Hindustan Unilever.
    Linediverter and Pick&Place of Matrix in X-Y direction:- Here Matrix of bottles is made with the help of line diverter servo motor and that matrix is picked & placed with the help of pneumatic gripper and X-Y direction movement with servo motor, for secondary packaging. Here Servomotor & Servodrive are of Parker and MotionControl, HMI of Delta.
  • 5. Lazoine Pick & Place of tubes in Wax Injecting Machine.
    It is a Wax injecting machine for Investment Casting Industry. There we have added one extra feature as per customer requirement for pick & place of glass tube in die before wax injection. After proper injection of wax in die through our automated wax injection machine, picking of that glass tube pattern and placing them on belt outside the wax injection machine. Then pick & place, 2 axes robot, again goes for picking the glass tubes for another cycle. In this way cycle repeats. Pick & Place is done through Parker OSP (Origa system plus) (Parker 2 axes linear movement system driven by servo motor). In Pick & Place system we have used Motion controller and HMI of Delta, Servo drive and Servo motor of Parker Hanniffin.

Job Responsibilities :

  • Research & Development (Study of Schneider products & softwares and applying that thing to our machines)
    • I have worked on a Schneider Controllers known as M258, M238 &M058 and SoMachine software of Schneider Electric as a product developer.
    • Developing functional block libraries for horizontal flow wrapping machine and study of different features of Schneider controller software and motion functional blocks which we can implement in our machines.
  • PLC programming and HMI / Display /Operator interface programming
    • Working on both type of controllers- Logic controllers & Motion controllers.
    • Programming related to various machine functions
    • Synchronization of Master & Slave drives with CamIn & GearIn
    • Configuration of AC drive, Servo drive, Encoder in program
    • Generating Electronic data sheet(EDS) by Advantsys software for Optimized terminal block & configuring the same in Motion pro programming software
    • Electromechanical/Physics calculations required in programming
    • Efficiently use of functional block in program
  • Responsibilities at Factory
    • Downloading & Modification of program in PLC & HMI
    • Ensuring proper wiring of electrical control and power panel
    • Ensuring proper functioning of machine
    • Troubleshooting of machines(From both perspective Electrical & Automation)
    • Configuration, Optimization and Tuning of Servo Drives & AC Drives
    • Co-ordinating with stores & sales department
    • Electrical Control & Power wiring drawing analyzing and approving
  • Visit client site for Electrical Installation, modification, commissioning & trouble shooting of our machines.
  • Providing training to junior engineers and customer’s engineers.
  • Complete wiring of machines at both ends - Panel & Machine(during training period)

Projects Worked On :

  • 1. Britania, Parle, Sunfeast Autofeeder with Autoloader bikipack & family packmachine
    Here whole automatic system is created for automatic feeding and packaging of biscuits. Functions like cutting, sealing, printmark accuracy, temperature controlling for sealing, stacking of biscuits, etc are the basic requirements for packaging machine that has to be provided. Here we have used LMC-20 motion controller, XBT GT HMI and Lexium 32A servo drive. Here we have synchronized Induction motor with encoder and two servo motor.
  • 2. Hindustan Lever Soap wrap machine.
    Here also we have used controller, drives and HMI as proj.1) but difference is it is a soap wrap mc and the system is little bit different, we have synchronized five servo motor. Individual servo for Cutting & Sealing, Wrapping, Indexing, Gap-Filling &Transferring.
  • 3. Britania high speed basic bikipack and family pack machine.
    This is our basic standard packaging machine. Here we have used Micro PLC, XBT R411 HMI and Altivar 312 AC drives.
  • 4. Nestle noodle wrap machine and auto feeding system.
    Here we have used 8 Axes servo system and synchronized them all. We have provided various extra beneficial functions in this whole automation system.

Automation Knowledge :

Schneider (While working with Multipack System Pvt Ltd) :-

PLC & Motion Controller
LMC-20, Micro, Twido, M258, M238 & M058
PLC Software
Motion Pro based on Codesys, PL7 pro, Twido soft, SoMachine
HMI / Display
XBT G, GT, P, PM, N,R,F,RT, GXO, R411
HMI Software
Vijeo Desinger, Vijeo Desinger Lite, XBT L-1000
Communication Protocols
Ethernet, Can open, Modbus, Unitelway, Serial RS232 & RS485, Motion Bus
AC & Servo Drives
Altivar 312, Altivar 12, Lexium 05, Lexium 32A, Lexium 32C
Languages
LD(Ladder Diagram), ST(Structure Text), FBD(Functional Block Diagram), CFC(Continuous Function Chart)

Delta, B&R, Parker & AllenBradely(While working with Modtech machines) :-

PLC & Motion Controller
Delta-DVP60ES2, DVP-10PM, DVP-20PM; B&R-4PP015, 4PP045, 4PP420, B&R Automation PC; Parker-COMPAX3; AB-MicroLogix 1400
PLC & Motion Software
WPLSoft, C3 Servomanager based on Codesys, Automation Studio, RS Logix, Twin Cat.
HMI / Display
Delta-DOP-A& TP15; Kinco-MT4210T; Parker-XPR06VT-2P1; AB Panelview C400
HMI Software
Kinco- Kinco HMIware_ENU; Delta- Screen Editor, TP Editor; Parker- Interact Xpress Manager.
Communication Protocols
Ethernet, Modbus, HEDA Bus, Serial RS232 & RS485, Motion Bus
AC, Servo & Stepper Drives
Schneider-Altivar 312, Altivar 12; Parker-Compax3,Vix_AH_01, ARIES AR13SE; RTA-A-NDC 96
Languages
LD(Ladder Diagram), ST(Structure Text), FBD(Functional Block Diagram), CFC(Continuous Function Chart)

Siemens (While working with Siemens Ltd) :-

PLC & Motion Controller
Simotion D410, D425, D435 & D445, S7-1200, 1500, 300 & IM151-8 PN
PLC & Motion Software
Simotion Scout, TIA Portal V11 to V13, Step-7 & Starter.
HMI / Display
TP, MP, KTP & Comfort panels.
HMI Software
Wincc flexible 2008 & Wicc Professional V13.
Communication Protocols
Profinet and Profibus.
Drives
Sinamics Drives: S120 with CU 320, G120 with CU 240 E-2PN and CU 250 E-2 PN, S110 with CU 310, V90, V20. Micromaster Drives.
Languages
LD(Ladder Diagram), FBD(Function Block Diagram), ST(Structure Text)&DCC Charts in Scout. LD & SCL in TIA Portal.
Taken training under Siemens Sitrain for Step 7 with S7-300, Starter with Sinamics S120& Simotion Scout with Simotion, TIA Portal with S7-1200 and Basics of AC-DC Drives., TIA Protal with S7-1500 Advanced, and STL Programming in TIA Portal.

Siemens, Lenze and B&R(While working with ATE Enterprise Pvt Ltd) :-

PLC & Motion Controller
S7-300, Automation PC of B&R
PLC & Motion Software
Step-7, Twin Cat PLC Control of Beckhoff.
HMI / Display
Simatic Industical PC (IPC)
HMI Software
Wincc flexible 2008
Communication Protocols
Profinet, Ethernet and Profibus.
Drives
Lenze L-force - State Line C 8400 and High Line C 9400 drives, Sinamics S120 & G120.
Languages
LD(Ladder Diagram) & SCL.

Siemens, SEW, TURCK, P&F, and B&R (While working with Thyssenkrupp System Engineering) :-

PLC
S7-1500 CPU 1516F-3 PN/DP, 1518F-4 PN/DP & 1516-3 PN/DP
PLC Software
TIA Portal V14 & V15
Drives
Sinamics S120 with CU320 PN/DP , SEW Movidrive MDX61B0008, Festo CMMP Drive
Drive Software
Starter, MOVITOOLS MotionStudio& Festo Configuration Tool
HMI
Comfort Panels TP1500 & TP1200,Wincc Professional V14 & V15
HMI Software
TIA Portal Inbuilt Wincc Professional V14 & V15
Industry 4.0 Technology- IO Link Modules & Softwares
Turck Master & Safty Modules - TBEN-L5-8IOL&TBPN-L1-FDIO1-2IOL, P&F Hub modules - ICA-16DIO-G60AL-IO.
Softwares: Turck Safety Configurator, PACTware 4.1 & IODD DTM Configurator
Communication Protocols
Profinet and Ethernet
Languages
LD(Ladder Diagram), STL(Statement List) , SCL(Structured Control Language).