Personal Computer Serial Interface Migration

The Personal Computer Serial Interface (PCSI) added to the functionality of Honeywell’s TDC systems by providing serial interface capability to higher level computing resources. The PCSI provided the capability to communicate to PC-based applications such as spreadsheets, data analysis packages and trending applications. It has enabled personal computer access to TDC systems in thousands of locations around the world. However, control system needs change, process improvements are ongoing, and there comes a time when it makes economic sense to replace the existing control system with the improved capabilities of today’s technology. Today, Experion™ Process Knowledge System (PKS) controllers deliver control functionality far beyond what was originally provided in TDC 2000. Experion is a next-generation process automation system that unifies people with process, business and asset management to help you increase profitability and productivity. Experion’s advanced control and analysis capabilities allow you to replace aging PC-based solutions with today’s open standards such as OPC, ODBC and Ethernet. To facilitate your migration to Experion, two key functions are required. First, existing field signals must be easily and quickly moved to the new control system. Existing control schemes must also be migrated (and preferably improved) when implementing the new control system. To address our customers’ migration needs, Honeywell provides two advanced solutions—Signal Match and Control Match—that help you match your old system functionality to Experion. Signal Match is a suite of hardware assemblies and project services that enable the I/O connections of your existing TDC 2000 vintage control system to be simply and easily transferred over so that you can enjoy the many benefits of Experion. In most cases, your existing sub-system can remain intact, with direct connectivity to Experion replacing the outdated DHP communications. Control Match is a suite of services and tools that can translate your existing control algorithms and schemes to Experion, and allow you to take advantage of its many new capabilities. Together, these solutions not only enhance your control system’s performance, but also improve your ability to make informed business decisions.