Method for securing the exchange of data between an external access unit and field device
First Claim
1. A method for safe data communication via WAN (Wide Area Network) or LAN (Local Area Network) between a remote access unit and a field device for determining or monitoring at least one physical or chemical process parameter, comprising the steps of:
- permitting an on-site operator of the field device or the field bus adapter to allow a remote operator of the remote access unit a targeted access to the field device or the field bus adapter;
activating by the on-site operator an actuating element at the field device or the field bus adapter in order to enable a remote accessing of the field device or the field bus adapter to the remote operator for a defined time span; and
servicing the field device or the field bus adapter during the defined time span via the remote access unit.
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Accused Products
Abstract
A method for safe data communication via WAN, LAN (e.g. Internet) between at least one external access unit and a field device, or a field bus adapter for determining or monitoring at least one physical or chemical process parameter. According to the method unauthorized accessing of a field device, or a field bus adapter, in the field is blocked in that the operator of the field device or the field bus adapter permits the external access unit to have targeted access to the field device, or the field bus adapter.
23 Citations
22 Claims
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1. A method for safe data communication via WAN (Wide Area Network) or LAN (Local Area Network) between a remote access unit and a field device for determining or monitoring at least one physical or chemical process parameter, comprising the steps of:
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permitting an on-site operator of the field device or the field bus adapter to allow a remote operator of the remote access unit a targeted access to the field device or the field bus adapter; activating by the on-site operator an actuating element at the field device or the field bus adapter in order to enable a remote accessing of the field device or the field bus adapter to the remote operator for a defined time span; and servicing the field device or the field bus adapter during the defined time span via the remote access unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for safe data communication via WAN or LAN between a remote access unit and a field bus adapter, for data capture from, or control of, a plurality of field devices which serve for determining or monitoring at least one physical or chemical process parameter, comprising the steps of:
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permitting an on-site operator of the field bus adapter to allow a remote operator of the remote access unit a targeted access to the field bus adapter; activating by the on-site operator an actuating element at the the field bus adapter in order to enable a remote accessing of the field bus adapter to the remote operator for a defined time span; and servicing the field bus adapter during the defined time span via the remote access unit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification