Abstract: A method and arrangement for providing access of a first computer to at least one application installed on a virtual machine of a second computer via a network connection, wherein at a first step, a Remote Desktop Protocol connection (RDP-C) is established from the first computer to the virtual machine and, at a second step, at least one communication relation of the first computer to an industrial controller is made available to the at least one application as a local communication relation of the application from the virtual machine to the first computer via a virtual channel of the RDP-C connection such that from a user's perspective, only exactly one connection to the virtual machine must be established via the RDP-C, where required back channels can be automatically established and where no security settings must be changed in firewalls or routers.

Abstract: A automation system, a computer and method for communicating includes exchanging data, between a first computer, a second computer and at least one automation device over a wide area network via an application-specific protocol, wherein one of the computers has a local network connection to the automation device, the application-specific protocol has an application layer, and the first and second computers execute respective first and second automation programs such that a transparent connection is provided for the automation programs and their application-specific protocol beyond local network boundaries which can be it efficiently, where signaling functions from lower communication layers that are missing are simulated by introducing event loops on both sides of the communication.

Abstract: A method and arrangement for providing access of a first computer to at least one application installed on a virtual machine of a second computer via a network connection, wherein at a first step, a Remote Desktop Protocol connection (RDP-C) is established from the first computer to the virtual machine and, at a second step, at least one communication relation of the first computer to an industrial controller is made available to the at least one application as a local communication relation of the application from the virtual machine to the first computer via a virtual channel of the RDP-C connection such that from a user's perspective, only exactly one connection to the virtual machine must be established via the RDP-C, where required back channels can be automatically established and where no security settings must be changed in firewalls or routers.

Abstract: A automation system, a computer and method for communicating includes exchanging data, between a first computer, a second computer and at least one automation device over a wide area network via an application-specific protocol, wherein one of the computers has a local network connection to the automation device, the application-specific protocol has an application layer, and the first and second computers execute respective first and second automation programs such that a transparent connection is provided for the automation programs and their application-specific protocol beyond local network boundaries which can be it efficiently, where signaling functions from lower communication layers that are missing are simulated by introducing event loops on both sides of the communication.