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 The Digital AromaPlug and Play with PROFIBUS PA—First major field bus project at BASF At BASF in Ludwigshafen, the development of aromatic plant O 810 led to the largest PROFIBUS PA system on the site. The system comprises 1,000 PROFIBUS PA measuring points in the hazardous area and is based throughout on the PROFIBUS DP and PA digital communication protocol. The PROFIBUS PA devices are dispersed over four sub-sections of the plant.  FieldBarriers and Valve Couplers at the O 810 aromatic plant. BASF made the decision to build the plant two years ago and awarded the supplementary contract for the complete automation package to the engineering specialists Lang und Peitler Automation. An essential component of the contract was an extensive integration test for all system components and field devices, with a life cycle concept and a guarantee to BASF of functional reliability and the compatibility of system components and field devices for a period of 15 years. The completion of all four production lines is scheduled for spring 2006. Consistent and flexible With the new aromatic plant BASF were intent on creating a homogeneous system structure for the lowest possible investment volume and one, which can be easily expanded to suit changing demands. “The advantages of the standardised PROFIBUS communication protocol are now generally recognised”, says Gerd Niedermayer, Engineering Manager at BASF. It can be universally applied from the goods inward stage, through all production processes right through to delivery of the product and it also saves time and expense on commissioning and documentation. “We expect a lot from PROFIBUS, in particular from the diagnostics and the asset management. The PROFIBUS technology has passed its test of maturity”, explains the BASF expert. Easy to integrate Capable and reliable segment couplers; field bus barriers and sensor-actuator boxes have ultimately supported the economic breakthrough of PROFIBUS PA. BASF decided on an independent device management system based on FDT technology. The problem of the direct integration of the field device DTMs into the control system has been ingeniously circumvented by using the stand-alone FieldCare configuration tool to provide separate field device parameter assignment. It won’t be long before a mixture of lemon, lilly of the valley, lavender and rose is lending quite a personal aroma to the Ludwigshafen plant.
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