Method for data exchanging data between a field device and a control device via internet

• US 20050120070A1
• Filed: 12/11/2002
• Published: 06/02/2005
• Est. Priority Date: 12/21/2001
• Status: Abandoned Application

• Current Assignee: Endress+Hauser Process Solutions AG (Endress+Hauser AG)
• Original Assignee: Endress+Hauser Process Solutions AG (Endress+Hauser AG)
• Inventors: Seiler, Christian, Griech, Reinhard
• Application Number:
  US10/498,514
• Publication Number:
  US 20050120070A1
• Time in Patent Office: Days
• US Class Current: 709/200
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 2219/31457 Factory remote control, monitoring through internet
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming

Abstract

In a method for data exchange between a field device 1, 2, 3, 4 and a control device 50 via Internet 20, modem 13, 14 and public telephone network 30, the current IP-address of the modem 13, 14 is transmitted to the distributor-server 45 over the public telephone network. Field device queries by the control device 50 to a permanent address of the field device are forwarded via the current IP-address to the field device 1, 2, 3, 4.

Claims

1-3. -3. (canceled)

4. A method for data exchange between a field device, which is connected with the Internet over a modem and the public telephone network, and a control device, which is likewise connected with the Internet, comprising the steps of:

a) Sending a field device query, directed to a permanent address of the field device, from the control device to a distributor-server via the Internet;

b) dialing the modem from the distributor-server;

c) log-in of the modem at an Internet-Service-Provider and transmission of the current IP-address of the field device to the distributor-server; and

d) forwarding the field device query to the current IP-address of the field device.

5. The method as claimed in claim 4, wherein:

a plurality of field devices are connected over a gateway with the modem.

6. The method for data exchange between a field device, which is connected over a modem and the public telephone network with the Internet, and a control device, which is likewise connected with the Internet, comprising the steps of:

a) periodic collecting of the field device information of the field device by the distributor-server;

b) intermediately storing the field device information in the distributor-server; and

c) transmitting the field device information in the case of a field device query to the permanent address of the field device by the control device.