Process automation system with security interface

A system for process automation of a manufacturing plant, comprising:

• a plurality of machines of the manufacturing plant,
• a plant machinery database comprising control parameters for the machines;
• an automation system for automatically operating the machines of the manufacturing plant in accordance with the control parameters in the plant machinery database;
• a security interface configured for:
• receiving a request,
• verifying the request partially by means of comparison values from either the plant environment database or the plant machinery database,
• in response to determining that the request is valid, storing control parameters comprised in or derived from the request in the plant machinery database or the PLC/PCS interface to the machines directly;
• wherein the automation system is configured to perform the automatic operation of the machines in accordance with the stored control parameters comprised in or derived from the valid request.