SYSTEM AND METHOD FOR CONTROLLING AND/OR ANALYZING AN INDUSTRIAL PROCESS BY MEANS OF AN OFF-SITE PROCESSING UNIT AND A REVISION MODULE FOR THE SYSTEM OPERATOR

摘要

A system for controlling and/or analyzing an industrial process having an on-site automation unit of a system operator, wherein the on-site automation unit performs a first process variable calculation and influences the industrial process. An off-site processing unit of a service operator different from the system operator is provided, wherein the off-site processing unit has an application and carries out a second process variable calculation and influences the industrial process directly or indirectly via the second process variable calculation. Local data is received by the off-site processing unit from the on-site automation unit via a data link. The off-site processing unit stores the local data in a primary storage. A revision module belonging to the off-site processing unit is provided wherein the revision module logs access to the primary storage by the application.

主权项

1. A system for controlling and/or analyzing an industrial process, comprising:
an on-site automation unit of a system operator, said on-site automation unit configured to execute a first process variable calculation and to influence the industrial process; an off-site processing unit of a service operator different from the system operator, said off-site processing unit including an application and configured to carry out a second process variable calculation and to influence the industrial process directly or indirectly via the second process variable calculation; a data link via which the off-site processing unit receives local data from the on-site automation unit; and a primary storage configured to store the local data; said off-site processing unit including a revision module configured to log access to the primary storage by the application.