Visualisation method for process data (x, x*, Pi) and process alarms (Aj) assigned to a process object, - wherein an industrial technology plant is controlled and monitored by a process control system, - wherein process objects and the assignment of the respective process data (x, x*, Pi) and of the respective process alarms (Aj) to the process objects are known to the process control system, - wherein the process alarms (Aj) each have a priority, - wherein the process control system automatically triggers a process alarm (Aj) of the respective process object if the process data (x, x*, Pi) assigned to the respective process object fulfils a predetermined trigger condition, - wherein the process control system transfers a corresponding alarm message to an alarm system when a process alarm (Aj) is triggered, - wherein the alarm system outputs the corresponding process alarm (Aj) to at least one operator, - wherein the process control system archives the process data (x, x*, Pi) and the currently triggered process alarms (Aj) at acquisition times in each case in the sense of a history, - wherein the alarm system, as a result of the selection of a process data item (x, x*, Pi) and the specification of an associated display period by the at least one operator requests the history of the selected process data item (x, x*, Pi) for the predetermined display period from the process control system and outputs the associated time sequence as a graphic to the at least one operator, - wherein the graphic comprises a number of process data points and - wherein the alarm system establishes the process data points on the basis of the values of the selected process data item (x, x*, Pi) of a respective acquisition period characteristic of the respective process data point, characterised in that - the alarm system, together with the history of the selected process data item (x, x*, Pi), also requests the history of the process alarms (Aj) assigned to the respective process object for the same display period and - the alarm system presents the process data points in the graphic in an encoding, which in each case specifies the highest priority for the respective process data point with which process alarms (Aj) have occurred during the respective acquisition period. - wherein an industrial technology plant is controlled and monitored by a process control system, - wherein process objects and the assignment of the respective process data (x, x*, Pi) and of the respective process alarms (Aj) to the process objects are known to the process control system, - wherein the process alarms (Aj) each have a priority, - wherein the process control system automatically triggers a process alarm (Aj) of the respective process object if the process data (x, x*, Pi) assigned to the respective process object fulfils a predetermined trigger condition, - wherein the process control system transfers a corresponding alarm message to an alarm system when a process alarm (Aj) is triggered, - wherein the alarm system outputs the corresponding process alarm (Aj) to at least one operator, - wherein the process control system archives the process data (x, x*, Pi) and the currently triggered process alarms (Aj) at acquisition times in each case in the sense of a history, - wherein the alarm system, as a result of the selection of a process data item (x, x*, Pi) and the specification of an associated display period by the at least one operator requests the history of the selected process data item (x, x*, Pi) for the predetermined display period from the process control system and outputs the associated time sequence as a graphic to the at least one operator, - wherein the graphic comprises a number of process data points and - wherein the alarm system establishes the process data points on the basis of the values of the selected process data item (x, x*, Pi) of a respective acquisition period characteristic of the respective process data point, - the alarm system, together with the history of the selected process data item (x, x*, Pi), also requests the history of the process alarms (Aj) assigned to the respective process object for the same display period and - the alarm system presents the process data points in the graphic in an encoding, which in each case specifies the highest priority for the respective process data point with which process alarms (Aj) have occurred during the respective acquisition period.