WebAccess Thin Client - HMI for web browsers.

WebAccess Thin Client Interface
Access real-time data and control automation equipment with a Pocket PC or PDA.
The Thin Client interface is intended for use with PDA, Pocket PCs and Handheld computers. Any ASP enabled web browser can view the thin client graphics. Using the standard Web browser supplied with Windows CE, users and operators can view and control automation equipment used in industrial, manufacturing, process and building automation systems.		figure 1 full control of Automation Systems using a PDA or Pocket PC.
Snapshots of Dynamic Graphics The Thin Client interface supplies static snapshots of dynamic graphics as GIFs and JPEGs. No plug-in or ActiveX control is required. Each time the refresh button is pressed, a new snapshot is delivered to the PDA showing the latest color, position and values. The GIFs and JPEGs are generated automatically by the WebAccess software without any action required by engineers or users. Change Values and Setpoints in Real-Time Real-time Data, Alarms and changes to data are through a text type interface. With appropriate passwords, users can View displays assigned to them, change setpoints, start or stop equipment, enter data, acknowledge alarms and perform any control action as if through a PC based HMI.		figure 2 - typical Graphic Display with control tags.
A "true" Thin Client An ordinary Web Browser is all that is need to view and control. Unlike the competition, no software needs to be installed on the client to view the WebAccess Thin Client interface. Others claim to have a 'thin client" but require special Terminal Emulation or other software to be installed on the client. Although intended for use by PDAs, Pocket PCs, Tablet Computers and other handhelds, the thin client interface can be viewed by any computer using a Web browser that supports ASP (Active Server Pages). This makes the Thin Client Interface ideal for infrequent users unlikely to take the time to install the Plug-in or highly secure clients that restrict software installation on their clients. The Thin Client interface has been tested with the Compaq iPAQ series of pocket PCs. The Thin Client interface supports wireless Ethernet, TCP/IP, firewalls, proxy servers, routers and Windows Integrated Security.	figure 3 - iPAQ 3900 pocket PC from Compaq shown.



Tips on using the Thin Client Login: admin Password: (blank - i.e. no password) Click the yellow pointers to expand and compress the list of displays, tags, alarms etc. Click on any Graphic to enlarge it. Click here to View the Broadwin Demo using the Thin Client Interface		figure 2 4 - Menu Display.



Thin Client Requirements Operating System: Designed for Microsoft Windows CE version 3.0 or later. Windows Mobile, 95, 98, ME, 2000, 2003, XP and Vista can also be used. Web Browser: Microsoft Internet Explorer for Windows CE and Internet Explorer 5.5 or later (ASP enabled). Display Resolution: 200 x 200 Minimum. Communications Service: Microsoft TCP/IP Protocol including Wireless Ethernet Communications Speed: T1, DSL, 28.8 kb/sec, 33 Kb/sec, 56 Kb/sec, 128 Kb/sec and ADSL supported User Security Privileges: No installation of software is required. Firewall Security: Compatible. Web Security: WebAccess supports Anonymous Access, Authenticated Access (Integrated Windows authentication) and Secure Communications including Certificates, Secure Sockets and Virtual Private Networks.
Adobe Acrobat Reader file format (pdf) ThinClient.pdf - WebAccess HMI / SCADA Thin Client Interface (178 Kbytes) This summarizes the Thin Client Interface to WebAccess, the first fully Web Browser based HMI and SCADA software for automation. This electronic document can be viewed and printed using Adobe Acrobat Reader.
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