Web-based automation with Saia S-Web Controls Division

Transcription

1 System Information Internet Ethernet Profibus Serial Web-based automation with Saia S-Web Controls Division Saia PCD.Web technology, seamlessly integrated and applied, transforms the automation environment in all areas of commissioning, service, control and monitoring. Highlights Web browser as tool for commissioning, service and visualization. No proprietary software tools or runtime licences necessary. Continuous access via any interfaces or networks: from Ethernet TCP/IP to Profibus. Saia PCD.Web-Server integrated within all products, from the most powerful controller to simple remote I/O at no extra cost. Saia S-Web-Editor easy, convenient editing of Java-based Web pages (knowledge of Java or HTML programming not required). Saia Web-Panels economical touch-screen panels with built in Web browser for control and monitoring.

2 Web-based automation with Saia S-Web Operation, visualization, commissioning and maintenance Saia S-Web an complete system approach All the more recent Saia PCD control devices (PLCs and RIOs) include a built-in web server in the basic unit at no extra cost. Saia S-Web is an integral system approach that not only includes the web server and browser, but also all the necessary tools (e.g. Saia S-Web-Editor) for creating web applications with ease and convenience. Economical, industrial, web-based control stations are also available, in the form of embedded Windows touch-screen panels. The seamless system employed by Saia-Burgess to integrate web technology has not only led to a cost differentiation, but also to a positive functional differentiation from the general market level. Web-based device and installation management With the use of web technologies, standard tools like Internet Explorer can now replace the specific, proprietary software tools currently used for most commissioning and servicing of systems, installations and equipment. No specialist know-how is required to operate a browser, and it has a high level of user acceptance. Predefined HTML pages allow optimized device and system management during commissioning and service. All device or installation-specific documents and information (user guides, spare parts lists, other links, telephone contacts, etc.) can be stored directly in the PCD controller s web server, where they can be called online at any time with the browser from a service PC or any other connected Saia Web-Panel. HTML pages specific to user-groups further enhance comfort and security, while also significantly reducing costs. Web-based control and visualization, without runtime licences Expensive and often complex Scada systems or proprietary control panels have frequently been used, even for simple control and monitoring functions. Such tasks are ideally suited to the use of a web server and browser. This saves the expense of costly development tools and runtime licences. Information is located at the scene of the action (in the controller) and is therefore always up-todate. All control devices, whether local (e.g. with a Saia Web-Panel touch-screen) or remote (with a browser PC on Intranet or Internet) access the same data source (web server) and therefore have the same user interface. By decentralizing data and functions, the costs of creating an application are considerably reduced, as well as its administration and support. Another advantage of web technology is the vendor-independent, standardized interface between control system and management level. 2 3

3 Saia PCD.Web-Server Web technology seamlessly integrated within all devices and systems Web-Server integrated in Saia PCD operating system The web server is integrated within the operating system of all new PCD controllers and forms the heart of the S-Web concept. No additional module is required. Building it into the operating system has made accessing PCD data very efficient and direct. HTML files, Java applets, pictures and any files can be stored in the web server. The web server processes queries from the browser according to HTML standard 1.1 and delivers the required pages with data. PCD data is accessed within an HTML page with special text commands, or within Java applets or scripts using special CGI calls. It is possible to protect access to HTML pages and PLC data with a password. Four protection levels are available, each with a freely definable password. Web project management forms part of the PG5 programming tool. Web pages are generated simply and efficiently with the Saia S-Web-Editor, or with a standard HTML editor (e.g. Frontpage). Seamless access via any choice of interfaces or networks Access to the Saia PCD.Web-Server is possible not only via Ethernet TCP/IP, but also via economical standard serial ports (RS 232, RS 485, modem...) or Profibus networks. It also takes place seamlessly across the various network levels. This makes web technology feasible even for simple, low-cost devices without any Ethernet TCP/IP connection. Web browsers on Intranet/Internet have, via the frontend PC and Saia Web-Connect, transparent access to all connected PCD.Web-Servers. Saia Web-Connect software lets connections be established to the PCD.Web-Server, even without an IP address. This means that no registered IP address is necessary for Internet access as far as the frontend PC in PCD.Web-Server devices. Moreover, Saia Web-Connect software allows large files (e.g. picture files) to be stored in the local directory on the frontend PC. When the PCD.Web-Server is accessed, graphics are loaded directly from the frontend PC. This not only saves space in the PCD controller s memory, but also reduces the time required to load web pages, even by slower communications connections (e.g. modem). 2 3

4 Saia S-Web system for implementing web applications A professional toolbox for the Saia PCD.Web-Server Saia S-Web-Editor Java-based web pages created simply and efficiently The Saia S-Web-Editor is an easy, convenient way of creating dynamic web pages for the Saia PCD.Web- Server. No knowledge of HTML or Java-programming is required. Pages are created in the editor by positioning and parametrising graphic objects, which have been specially adapted to Saia PCD devices. Web pages can be created for a variety of screen resolutions with WYSIWYG (What You See Is What You Get). The editor is perfectly integrated as an add-on tool within the Saia PG5 programming tool and therefore has direct access to symbols in the PG5 resource manager. It has a basic library of Edit functions (text, character functions, graphics, buttons, display fields, barographs, etc.) that can be used to create animated web pages. On the basis of these functions, personal macro functions can be created and managed in a macro library. Other basic functions for logging and displaying history data (trends) and alarm handling are in preparation. The editor supports the use of GIF graphics. In this way, pre-existing photographs or system drawings and diagrams can also be used. Like the familiar Windows tools, this editor possesses powerful formatting functions, such as grouping, orienting, etc. PCD variables defined in the editor are automatically refreshed in the browser by the Java applet (cycle time adjustable). In the PCD.Web-Server, pages created with the Saia S-Web-Editor can be mixed as required with other HTML-pages or Java applets, created with other software tools. Saia Web-Builder The Saia Web-Builder is used to generate and manage PCD.Web-Server applications. Files destined for the PCD.Web-Server (e.g. HTML pages, Java applets, pictures) are selected from the PG5-Web project directory using a select window and then converted to PCD format. After the build procedure, the converted file is downloaded to the PCD controller with the PG5 downloader. Saia Web-Builder is installed as an add-on tool for the PG5. 4 5

5 Saia S-Web system for implementing web applications Saia Web-Connect, Saia Web-Panels and Saia PCD devices with Web-Server Saia Web-Connect The Saia Web-Connect PC driver program establishes the connection between the browser and the web server controller. It is installed on the frontend PC, the browser PC or a Saia Web-Panel. Once installed, Saia Web-Connect is transparent for the user. Saia Web-Connect is a stand-alone driver program for which no runtime licences are payable. Saia Web-Connect allows access to the Saia PCD. Web-Server via any interfaces or networks, even in the absence of a TCP/IP protocol. This enables web technology to be used continuously, even in systems that do not have IP addresses (e.g. Profibus). A further advantage of Saia Web-Connect lies in the possibility of storing large files (e.g. pictures) in the local directory on the frontend PC. In future, the new PCD3.Mxxxx CPUs will also allow direct access to the web server with the http protocol on Ethernet TCP/IP, even without Saia Web-Connect. Saia Web-Panels economical touch-screen panels with web browser and ewindow.net When Saia Web-Panels are combined with the Saia PCD.Web-Server and Saia S-Web-Editor, they form an economical, efficient system that coordinates perfectly with PCD controllers to perform visualization, control and monitoring tasks. Saia Web-Panels are available in different display sizes and versions. Saia Web-Panel with embedded Windows.Net allows panel functions to be extended beyond the scope of straight display/touch functions. Saia PCD.Web-Server integrated in all products In all the more recent Saia PCD controllers and remote I/Os, a web server is included in the basic version at no extra cost. The web server is accessible via all device interfaces and communications channels, even without an Ethernet TCP/IP connection. This applies equally to the PCS1 compact controller, the modular PCD1.M135 flat-mounting controllers (in preparation), the PCD2.M150 (in preparation), PCD2.M170 and PCD2.M480, all the way to the PCD3.Mxxxx controllers from the new, modular PCD3 controller family: all have an integral web server. Even simple devices like the PCD3 remote I/O have a web server. Units are delivered complete with previously edited web pages that can be used for commissioning and device diagnostics. In PCD3 remote I/O devices, this allows the I/O signals to be configured and wiring checked using the web browser, without connecting an active master device. Even devices from an older generation, such as the PCD4.M170, have now been upgraded with a web server. In PCD CPUs, web applications share flash memory (up to 1 MByte in size) with the user program. In PCD3 CPUs, whose large flash memory PCS1 PCD1.M135 PCD2.M150 PCD2.M170 PCD3.M5xxx PCD2.M480 PCD3.Txxx (Remote I/O) PCD3.M3xxx PCD4.M170 modules extend to 64 Mbytes (in preparation) there is almost no limit to web applications. Even the entire PG5 project can be stored in the web server. The file system enables a web application to be loaded directly into flash memory modules with a standard FTP client (e.g. Windows-Explorer). Proprietary software tools are not required. 4 5

6 Typical examples Practical possibilities applying S-Web Seamless access by Ethernet via Profibus Saia Web-Connect software, combined with the gateway function in PCD controllers, provides seamless access to all Saia PCD.Web-Servers on Ether-S-Net, Profi-S-Net and even on simple, serial S-Bus (RS 485) networks. This enables the seamless implementation of decentralized webbased control and monitoring concepts. Even simple, low-cost devices without an Ethernet- TCP/IP connection have a web server, and so can be integrated into the concept. The PG5 programming tool also has seamless access to PCD controllers via the same interfaces and networks. Therefore, no duplicate wiring is needed for file and programming services. Internet access without IP addresses To access a web server via Internet, it is normally necessary to have a registered, public IP address for that web server. Such IP addresses still cost money. The S-Web concept with Saia Web-Connect software allows access to all web servers, even those without an IP address. This is achieved by installing Saia Web-Connect software on the frontend PC, after which a registered IP address is only required for the frontend PC. All browser PCs will then have Intranet and Internet access, without additional software, to web servers in all PCD devices. Moreover, thanks to the gateway function, this access takes place seamlessly, across several network levels, with Saia Web-Connect software remaining fully transparent to the user. The connection in the browser is established in the usual way by entering the URL (e.g. www. frontend-pc.com/pcd-controller/web-page. html). It is also possible to store large files, such as pictures or even overview pages from the frontend PC, as a way of reducing the load on PCD controller memory and of optimizing download times. If necessary, an OPC server or Scada system can also be operated on the frontend PC to complement the web application. 6 7

7 Typical examples Practical possibilities applying S-Web Web-based control and service concept for a warehouse stocking system using Saia S-Web The S-Web concept is ideally suited to the implementation of a low-cost, web-based control concept for commissioning, operating and servicing machines and equipment. The diverse capabilities are represented with the help of a stocking system. The example shows a stocking system comprising three individual systems, each controlled by a PCD3 controller with integral PCD. Web-Server. Operation is either local, using Saia Web-Panels, or remote, using a standard Intranet or Internet browser. Local or remote control Regardless of whether control is local or remote, the user always encounters the same user interface with the same current data from decentralized PCD.Web-Servers. Decentralizing data and functions reduces the costs of application creation, administration and support. Save costs by creation web pages simply and efficiently with Saia S-Web-Editor The web pages shown here are Java-based and can be produced with the Saia S-Web-Editor. The objects displayed can be drawn and animated very easily in this editor. Parameters for equip- ment and systems are animated and displayed with the help of Java applets in the browser in auto-refresh mode. The equipment parameters necessary for animation are transferred directly from the PLC user program by the PG5 resource manager. Duplicate entries are thereby avoided and costly project planning time is saved. If the Saia S-Web- Editor s available functions are not enough, specific, personal Java applets can be programmed and employed by the user. In the same way, personal HTML pages constructed with a standard HTML editor (e.g. Frontpage) can also be used in combination with Saia S-Web- Editor projects. Help pages, equipment/system descriptions and spare parts lists are mainly generated as standard HTML pages and then called from the Saia S-Web-Editor. In the Saia S-Web-Editor, system images and photographs that already exist in GIF format can be used and animated. It is also possible to produce user interfaces in many languages. Links to other web servers (e.g. information and support servers on Internet) can be called directly from the Saia S-Web-Editor application. Via the browser PC, s can be sent to the relevant service department. Service personnel have direct access via the Internet connection to the web server, enabling them to analyse problems quickly and take action. These capabilities reduce downtime and increase system availability. 6 7

8 Saia S-Web in practice Proven in numerous applications Applications implemented Country Project CH Monitoring a GSM radio installation Infrastructure automation CH Building Surveyor s Office, City of Basle CH Residential development: Family Park, Embrach CH St Camille Residential Centre for the Disabled Project description A PCD2.M170 is used to monitor and control the HEAVAC and emergency power equipment of a GSM radio installation for a telecommunications supplier. The operator uses the PCD.Web-Server and Internet Explorer as a visualization and service tools. The web server is accessed either via modem or locally, via the RS 232 interface. The PCD transmits faults directly to the service personnel via modem in the form of SMS text messages. The HEAVAC installations of public buildings are controlled and monitored with Saia PCD systems. The PCD.Web-Server is used as a visualization system for these installations. The PCD.Web-Server is accessed via Intranet. System faults are reported to the operating centre via . The central heating system for the Happy Family development of 75 homes is controlled and monitored with Saia PCD systems (including integral web server). All home owners have Internet access via a web browser to their own heating data and can adapt settings to their individual needs. The heating is regulated with Saia PCD2.M170 controllers. For operating and maintaining the system, the technical service can use the web browser via Intranet to access the Saia PCD.Web-Server. D Vocational training centre for technology, business and social care in installations, with heat recovery and a total of approx. 800 data points. 3 PCD2.M170 systems are used to control 13 partial air-conditioning Volklingen PCD2 controllers integral web servers are used for visualizing the installations. D CHP alarm and service management Infrastructure automation D Schlosspark Clinic, Berlin NL Greenhouse nitrogen regulation Infrastructure automation Combined heat and power modules (CHP) are controlled and monitored with PCD2.M157 devices. Faults are reported to service personnel in the form of SMS text messages. Service personnel can use the web browser via modem to access the systems for service or maintenance purposes. Web-based error message transmission for HEAVAC equipment in the Schlosspark Clinic with PCD2.M170. The Saia Web-Server was chosen because standard visualization systems were too costly for this application. Web-based telemaintenance of nitrogen regulation for a large greenhouse complex in Holland with Saia PCD2. The supplier of the regulation system uses the web server as an economical user interface for service purposes. The PCD.Web-Server is accessed via Internet Explorer using a modem. Saia-Burgess Controls AG Bahnhofstrasse 18 CH-3280 Morat Suisse T F pcd@saia-burgess.com P+P26/428 E Subject to change without notice