Software Packages for S7-300

    Several Software Packages has been developped by S.T.A. for Siemens S7-300 applicative projects.

       SMain purpose of these packages is to allow a common and unic software strucure for all projects both for

       system  and applicative features. All packages are also completed with a operating interface based on OP

       Control Panel (Protool) and it can be used both ON-LINE for any configured terminal and  STAND- 

       ALONE as virtual terminal.

       this type of Interface has been properly designed and implemented using multiplexing techniques in order to

       minimize the required resources on OP Terminal and to make it free from dimensions or quantities.

       In this way the packeage is fully available from functional ppoint of view as well as operating.

       Basically these interfaces are useful for maintenance/instrumentation peaople.

       Furthermore a set of packages and software libraries have been implemented to solve in standard way

       some technological problem as Rewinder/Unwinder machines both in Open than in Closed LOOP control.

       All Sofware here described was fully checked and tested in several projects at different levels of

       complexities and for many continuous process and treating lines.

    Alarms Management - Basic Package : It guarantees the capture of all alarms even pulse type until 

       the  operative acknowledging has been completed through the OP panel. - in case of multiterminal

       project all the acknowledge of common alarms can be done just from ONE terminal. No dedicated

       OP interface is included. 

    Analog Input Management - Basic Package : it cana manage all scalings for anaolog channel for any

       amount of them. For each channel it brings available into user memory all conversion and scaling

       parameters as well as the proper channel diagnostic

       Up to four Alarms thresholds can be integrated for each channel. It offers the possibility to replace in

       on-line mode one broken channel by other one, channel malfunction is detected, two different scaling

       mode are available,local remote setting available for testings.

       The Operator interface is available offering a single channel interface view with the possibility to

       modify all parameters in on-line mode

    Analog Output Management- Basic Package : similar as Analog Input,but for output channels-it can 

        manage the scaling for any amount of Analog Output Channels.

        For each channel it brings available into user memory all conversion and scaling parameters as well 

        as the proper channel diagnostic

       Up to four Alarms thresholds can be integrated for each channel. It offers the possibility to replace in

       on-line mode one broken channel by other one, channel malfunction is detected, two different scaling

       mode are available,local remote setting available for testings.

       The Operator interface is available offering a single channel interface view with the possibility to

       modify all parameters in on-line mode

    Loop Control Management - Applicative Package- it foreseen that the previous Analog Input and

       Output packages are still installed.It allows the addressing and parametrizing of standard control loops

       as Temperatures, levels etc...with analog output control or pulse actuator. The Autotuning procedure

       is also included as well as it is possible to operate the single loop in local mode for testing and control 

       loop simulations.

        The Operator Interface is available and it offer a single loop view page with the possibillity to operate

       in manual or local mode on all parameters.Trends loop and bargraphs are on this page to show the

       control status of each loop.

    Profibus Management- Basic Package : it allows to manage a profibus network basically for multi

       drives configuration.Deterministic polling of all configured drives are performed gruping the nodes 

       for different levels of priority (dynamically changeble) : that guarantee the maximum network

       performance even with a significant amount of nodes.

       This package makes the Profibus network totally reliable for multidrive application.

       It is confugurable for any amount of network nodes (Base version=64).The network diagnostic is

       always running even for those nodes that are not used by applicative program.

       Equipped with a proper Function Blocks library tested for the most common Drives available on

       market ( for each brand two FC : one for vector and one for scalar drive type) as :

       Siemens-Lenze-ControlTechnique-Vacoon-ABB-

       It includes FC to generate Network alarms and diagnostic to be easily interfaced with applicative

       sofware.

       The operator interface through the OP terminal allows to manage each node individually with the

       possibility to modify on line all parameters and to check the status, words exchanged of each single

       node. Each node can also be set in local mode to control them directly trough the panel

    Rewinder/Unwinder Management - Applicative Package : it is to manage the regulation and control of

       Rewinder/Unwinder Machine and for each kind of machine bring the following main functions :

       - double axis choise

       - Scaling tension-torques

       - Genarel parameters for single axis

       - Servodiameter

       - Speed Calculation

       - Torque control based on Taper Algorithm with three different parametric phases :

          Hard core overtension- constant Tension- Decreasing tension.The taper is controlled without any

          discontinuity as well as in hardcore overtension mode. Calculation is available even the machine is

          not running and reference speed can be manually setted

       - Motor losses calculation and management are included and they are individual for each mandrel

         (curve of losses depending on motor speed)

       - Thermal Losses Management are calculated in continuous way and a dedicated algorithm is properly 

          implemented to take in to consideration possible ON-OFF statuses and guarantee a very accurate

         calculation.

       - "Feeding Mode" Management were a proper control using a torque ramp procedure is implemented

         in order to facillitate the manual feeding procedure on mandrel

       - "Take and loose" Tension Management is a dedicated algorithm to detectd with maximum reliability

          this critical status of web control.

       - Control Loop with diameter measuring device is foreseen with possibility to switch any time from

          measured to calculated diameter mode

       - Closed loop control with Dancer roll unit (excludible)

       - Closed loop contro with Load Cells (excludibile)

       Operator interface on OP panel is included with all operative pages and maintenance and set up pages

       with all process perameters and settings

    Reports Management - Applicative Package : two different packages are available

        - Shift Report ( 3 reports per day) : it stores the reports data in the PLC memory for actual and two

          previous shifts.For each report all production data are calculated,accumulated and stored.

          The relevant Operator Interface on OP Panel is allowable to select the report shift and to modify

          some data ( (recovery of report mistakes)- to print the selected report directly from OP ( when

          printer is here connected)- to configure the shifts start time.

        - Archive Reports allows to manage a reporting for a selected key that can be configured and

          personalized as Coil or Product or Client up to 50 different reports at same time in the basic version

          even this limit can be easily extended. Report file is handed ciclically so the new report overwrite

          the oldest one. For each report unit (i.e. for coil) all relevant production data are accumulated and

          calculated while the actual coil (or Product or Client) does not change.

          The relevant Operator Interface on OP Panel is allowable to select and view any single report and

          to modify some data ( (recovery of report mistakes)- to print the selected report directly from OP (

         when printer is here connected)- to configure the reporting modes - to digit the product code and/or

         the Client Code

    Function Librarues for several calculations and minor applicative solutions 

SOFTWARE PACKAGES FOR S7-300