Abstract A system for arrangement of operations and connections between a computer or the like involved with a process and a control station needed by the process operator for communication with the computer and for control of the process in case of failure in the computer operation, and for arrangement of the communication between these devices and the process, wherein there are parallel measurement signal channels leading from the process to the computer and the control station and, similarly, parallel control signal channels leading from said devices to the process, respectively, and wherein, additionally, the control station is provided with separate push buttons or the like for at least each measurement of interest, with which push buttons the display of the measurement signal as well as the corresponding control signal may be switched on to the control station, and with which a message concerning the selected measurement may be delivered to the computer.
A system for arranging the operations and interconnections between a computer linked to a process and a control station needed by the process operator to communicate with the computer and to control the process if the computer breaks down, and for connecting these devices to the process, including means connecting the process to the computer and the control station for transferring measurement signals coming from the process concurrently and in their entirety to both the computer and the control station, signal channels from the computer and the control station for controlling the operating devices of the process likewise leading concurrently from the computer and the control station to the process, push button type activating means at said control station for at least each measurement of interest operative to activate means for the switching on of a display of the respective measurement signal and the control signal corresponding to said measurement signal, means for delivering a message concerning the selected measurement to the computer and manual control means at said control station connected by control lines to said operating devices of the process for direct manual control of the process when the computer breaks down.
Claim 2
Independent Claim
194 words
A system for arranging the operations and interconnections between a computer linked to a process and a control station needed by the process operator to communicate with the computer and to control the process if the computer breaks down, and for connecting these devices to the process, including means connecting the process to the computer and the control station for transferring measurement signals coming from the process concurrently and in their entirety to both the computer and the control station, signal channels from the computer and the control station for controlling the operating devices of the process likewise leading concurrently from the computer and the control station to the process, push button type activating means at said control station for at least each measurement of interest operative to activate means for the switching on of a display of the respective measurement signal and the control signal corresponding to said measurement signal, means for delivering a message concerning the selected measurement to the computer and manual control means at said control station connected by control lines to said operating devices of the process for direct manual control of the process when the computer breaks down.
Claim 3
Dependent Claim
50 words
The system according to claim 1 wherein the manual control means comprises at least one control button for generating a pulse signal having a duration equal to the length of time that the button is depressed, and said operating devices are responsive to the said duration of the pulse signal.