OpenPCS 2010 is the new generation of the proven IEC 61131-3 programming system from the infoteam Software company. Apart from converting the workbench to .NET technology, infoteam has made usability the new main focus of attention. The new release combines dependable functionality (reliability) and safe functionality (safety) with enhanced, userfriendly design (usability). The graphical user interface is based on the Microsoft Office Fluent User Interface. It gives the IEC61131 programming system a visual appearance that is unique in the industry and makes handling easier for the user. With OpenPCS 2010, infoteam has set about ushering in a new era in the automation industry, the age of enhanced usability. The graphical user interface of ribbon design, i.e. the multi-function bar, follows the style of Office applications and not only provides a clear arrangement of functions and logical menus but is also 'visually appealing' By definition, the multi-function bar is a graphical control concept for application programs which combines the elements of menu control and an icon bar. At the default setting it takes up more space on the screen than the traditional combination of menu and icon bar. The icons are usefully grouped and arranged within the ribbon, Workflow in this case.

The functions, in turn, are allocated to groups. For example, in OpenPCS 2010 there is a clipboard and, in the logical sequence of processing steps, 'Control', 'Edit', 'Compile', 'Execute' and 'Debug', whereby the arrangement adapts automatically depending on screen resolution and window size. With IEC61131 programming systemsthis product design is unique at present.

However, enhanced usability embraces far more than the new design of the user interface. OpenPCS 2010 boasts a whole host of new features, all of which were developed with the aim of simplifying control.

For example, complex CFC plans can be replaced by simple overview blocks. The product contains cross-reference lists for global and cross-project use. With the Hotswap function it is possible to simulate software changes and their effect on the future response of the system or machine without damaging the hardware. By means of 'Online Edit' the user is also able to make changes while operations are running, without having any negative impact on the operability of the machine. Consequently, the program can be altered during run time without having to restart the PLC. In other words, it supports 'experimental automation' in order to optimise a running process. Easy handling is also clearly evident in the tools. Interactive graphical editors, such as the continuous function chart editor (or CFC for short, Continuous Function Chart editor), prevent incorrect input. Function blocks here can, for example, be shifted with Autorouting.

On the ladder diagram it is possible to replace, copy and paste networks, whereby the graphics are adapted automatically. Functions are clearly structured and well arranged so they are easy for the user to handle. For data anal sis there are virtual tools available. The Control Data Analyzer (or CDA for short) enables the developer to track changes in variables over a period of time and displays historical data graphically. Using the OpenPCS analyzer it is possible to record run time values in sync with the cycle. With no losses whatsoever. The oscilloscope consists of signals that are displayed in a Cartesian coordinate system. Markers assist measuring while three modes and triggers help with 'Control'.

Product optimisation due to usability tests and customer feedback

infoteam Software presented its new product to coincide with SPS/IPC/DRIVES 2009. The sales launch proper is scheduled for spring 2010. "Until then our customers will have more than their fair say when it comes to product design – they are being actively involved in fine tuning", Brendel explains. Development of the programming system is based on the latest findings from user-friendliness studies and product design is oriented towards current style in the software sector and users' requirements. A 3- stage plan evaluates whether this approach has been followed in a logical, target-oriented manner. The first stage was completed in November: the prototype with a view to the range of functions and visual appearance was presented to coincide with the trade fair. That is being followed by a second step in the form of a test phase for selected customers, who are given the opportunity to test the new OpenPCS rigorously. Are product design and functionality coordinated with one another in a balanced manner? Are the functions arranged in such a way that the user's work really is made easier or does he still have to search too long for certain functions? Are stability and reliability not neglected? The challenge is integration. In this context, test persons in a usability laboratory can contribute important findings in practice. infoteam takes the results very seriously and incorporates them in product optimisation, the third and last stage before the product is actually sold.