A computer-implemented method for representing operator control information in the context of operator control and monitoring of a technical installation is proposed, which has at least one operator station server and one operator station client, wherein at least one measurement value of at least one technical object of the technical installation is received via the operator station server, a trend progression of the measurement value is generated in the event that an alarm, which relates to the measurement value, occurs in the operator station server, the trend progression from the operator station server is transferred to the operator station client, and the trend progression is visually presented to an operator of the technical installation in a trend progression diagram.

A safety switch comprises a switching device having a casing housing electric and/or electronic control means adapted to be connected with one or more circuits, an operating device adapted to be anchored to a movable part of the access to interact with the switching means when the access is opened/closed for the opening/closure of the circuits, means for detecting the opening of the access associated with the switching device and with the operating device for sending a stop command of the machine or plant upon the detection or request for the opening of the access, driving means for sending activation/deactivation and/or signalling controls and that comprise a touch monitor provided with one or more virtual controls and at least one microprocessor suitable for associating the virtual controls with a control and/or signalling function.

In one embodiment, a system includes system includes a data collection system configured to collect a data from a control system. The system further includes a configuration management system configured to manage a hardware configuration and a software configuration for the control system based on the data. The system additionally includes a rule engine configured to use the data as input and to output a health assessment by using a rule database configured to store at least one rule, and a report generator configured to provide a health assessment for the control system. The system also includes a rule editor configured to create the at least one rule, update the at least one rule, delete the at least one rule, or a combination thereof.