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Automation of modern process-related installations is increasingly being structured on a distributed basis. |
This trend has been emerging since the mid-seventies when the first distributed process control system (DCS) appeared on the market. This system solved the use of conventional control panel technology with individual controls, as well as hardwired controls with comprehensive wiring and cabling effort and expense.
In the 80s, the breakthrough occurred with the distributed process control systems. The control room was increasingly dominated by workstations equipped with monitors.
In the 90s, the first process automation bus systems were conceived and the control systems were equipped with new interfaces. The initial developments and use of remote I/O systems can be traced back to this time.
Thus, the distributed structure was extended into the field. Distributed I/O systems are the connecting elements between the sensor/actuator levels and the higher-level process control system.
Profibus DP has established itself as the interface between the process control system and remote I/O. The explosion-hazardous area has become apparent as the main area of application of remote I/O systems in the field of process automation...
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