Process Installation Comprising a Plurality of Field Appliances
AssigneeEndress + Hauser GmbH + Co. KG
InventorChris Abbot
Life of this patent
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Abstract
In a process installation having a plurality of field devices FLS, PS, CU, which exchange data with a control room CR via a signal line SL, wherein the signal line SL is designed for a conventional, first data transmission technology having a low data transmission rate (less than 10,000 baud), at least one field device CU applies for data transmission with the control room CR, via a second data transmission technology, which permits a greater data transmission rate and/or more functionality than the first transmission technology and which uses the existing signal line SL as the communication medium.
Claims11
1-10. (canceled)
A process installation having:
- a control room;
- a signal line;
- a plurality of field devices, which exchange data with said control room via said signal line SL, wherein:
- said signal line SL is designed for a conventional first data transmission technology having a low data transmission rate (smaller than 10,000 baud);
- at least one field device, for data exchange, operates with a second data transmission technology, which permits a greater data transmission rate and/or an expanded functionality than the first transmission technology, and which uses, as a communication medium, the existing signal line SL.
A method for modernizing a process installation with a plurality of field devices, which exchange data with a control room CR via a signal line SL, comprising the step of:
- older field devices which transmit data to a control room according to a first transmission technology by new field devices, which work according to a second transmission technology, wherein:
- the data transmission according to the second transmission technology occurs in a second channel on the existing signal line SL, so that the data transmission signals of the different transmission technologies do not influence one another.
A method for communication in a process installation with a plurality of field devices, comprising the step of:
- using an existing signal line SL for a first transmission technology and also for a second transmission technology.
Dependencies are inferred from the claim text.