Keyboards having multiple groups of keys in the management...

Details Keyboards having multiple groups of keys in the management... Keyboards having multiple groups of keys in the management...

2011-01-11

2011-01-11

Barnes-Bullock, Crystal J (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Having operator control interface

C700S017000, C341S022000, C341S173000

Reexamination Certificate

active

07869890

ABSTRACT:
A parallel operation keyboard (POK) which enables a user to provide multiple inputs simultaneously in managing a process control plant. A lock is provided to disable such simultaneous inputs. In an embodiment, multiple groups of keys are provided, with each group of keys being operable independently to modify the parameter value of a corresponding control loop. A network management station (NMS) and a server are designed to provide a suitable interface. In one implementation, each group of keys contains four keys respectively specifying increasing the parameter value, decreasing the parameter value, manual mode (in which the present level of the variable is controlled by the increase/decrease keys) and normal mode (in which the set point, i.e., the desired value, for the variable is controlled).

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