System and method for shutting down a field device
A field equipment, equipment technology, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as influence
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[0021] The disclosure herein relates to providing control systems and methods for ensuring that field devices implemented in safety instrumented systems are brought into a safe state. figure 1 The exemplary process plant 10 shown in FIG. 2 that can implement one or more embodiments of the present invention includes a process control system 12 and a safety system 14 (depicted in dashed lines) that typically operates as a safety instrumented system (SIS). SIS 14 is capable of performing safety instrumented functions (SIFs) to achieve or maintain a safe state in process control system 12 . If necessary, SIS 14 can override process control system 12 .
[0022] Process plant 10 includes one or more host workstations 16 or computing devices such as personal computers, for example, having a user interface including a keyboard and display screen accessible by plant personnel. exist figure 1 In the example shown in , two workstations 16 are shown connected to a process control / safety...
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Abstract
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