Control system and method for representing alarm-driven trend progression diagrams during operator control and monitoring of a technical installation

A control system for a technical installation having at least one operator station server and one operator station client, the at least one operator station server being configured to generate at least one alarm which relates to a measurement value of a technical object of the technical installation which is connectable to the control system, and the at least one operator station server being configured to receive the measurement value from the technical object to generate a trend progression of the measurement value and to transfer the trend progression to the operator station client to present the trend progression to an operator of the technical installation visually in a trend progression diagram to permit analysis of the technical object by interacting with the trend progression diagram to open a faceplate of the technical object, a visualization service and an alarm service being integrated into said at least one operator station server, and a subservice being integrated into a trend service which forms part of the visualization service;

• wherein the at least one operator station server is further configured to generate the trend progression of the measurement value and transfer said generated trend progression to the operator station client only if an alarm which relates to the measurement value occurs in the at least one operator station server, the alarm service detecting triggering of the alarm and reporting said triggering to the subservice of the trend service;
• and
• wherein the trend progression diagram includes a current progression of the measurement value and includes a previous trend progression of a measured value provided as a result of a termination of an associated alarm.