Internet Protocol (IP) Addressing Using an Industrial Control Program

• US 20180083916A1
• Filed: 09/21/2016
• Published: 03/22/2018
• Est. Priority Date: 09/21/2016
• Status: Active Grant

• Current Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Inventors: Xu, Dayin, Batke, Brain, Yu, Yi, Brandt, David, Whitehead, Clifford J.
• Granted Patent: US 10,412,041 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 2101/622 Layer-2 addresses, e.g. medium access control [MAC] addresses
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 47/13 in a LAN segment, e.g. ring or bus
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
• CPC Class Codes: H04L 61/5038 for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A system is provided in which a position for each device (relative to other devices) in a topology, and a corresponding device ID for each device, may be predetermined. Then, the predetermined position and corresponding device ID for each device may be compared to actual devices in a topology having preprogrammed device ID'"'"'s and pre-assigned IP addresses. If the comparison produces a match, the pre-assigned IP addresses in the actual devices may be utilized. However, if the comparison does not produce a match, the condition may be reported for further action.

Claims

1. A method for addressing devices in a local network group, the devices being operable to control an industrial process or machine, and the local network group including an industrial controller, the method comprising:

(a) providing a device configuration to the industrial controller, the device configuration including;

(i) predetermined relative positions for devices in a local network group; and

(ii) predetermined device identifiers corresponding to the predetermined relative positions, respectively, each predetermined device identifier providing an attribute for distinguishing a device from among a plurality of devices;

(b) providing a control program to the industrial controller, the control program being configured to control devices in a local network group, the control program also being configured to reference devices in a local network group using the device configuration;

(c) sending an addressing command message to devices in the local network group, the addressing command message being configured to generate Internet Protocol (IP) addresses for the devices in the local network group, the addressing command message also being configured to produce an addressing complete message providing;

(i) actual relative positions for the devices in the local network group;

(ii) actual device identifiers corresponding to the actual relative positions, respectively; and

(iii) IP addresses for the devices in the local network group;

(d) comparing the predetermined relative positions and the predetermined device identifiers from the device configuration to the actual relative positions and the actual device identifiers from the addressing complete message, respectively, to determine a match; and

(e) upon successfully determining a match, executing the control program to control the devices in the local network group by using the IP addresses corresponding to the devices.

2. The method of claim 1, further comprising, upon failing to determine a match, preventing the control program from executing and sending an alert message.

3. The method of claim 1, further comprising providing the device configuration and the control program from a Human Machine Interface (HMI) in communication with the industrial controller.

4. The method of claim 1, wherein the attribute is a Common Industrial Protocol (CIP) identity object.

5. The method of claim 4, wherein the CIP identity object includes at least one of a Vendor ID, Device Type, Product Code and Serial Number.

6. The method of claim 1, wherein the industrial controller is a Programmable Logic Controller (PLC).

7. The method of claim 1, wherein the addressing complete message further provides Media Access Control (MAC) addresses for the devices in the local network group.

8. The method of claim 1, wherein the industrial controller and devices are connected in a linear topology.

9. The method of claim 1, wherein the industrial controller and devices are connected in a ring topology.

10. The method of claim 9, wherein the industrial controller is a ring supervisor operating to provide a transmission path around a failure point in the ring topology.

11. An industrial control system comprising:

a plurality of devices in a local network group, the devices being operable to control an industrial process or machine; and

an industrial controller connected to the local network group, the industrial controller being operable to execute a program stored in a non-transient medium operable to;

(a) receive a device configuration including;

(i) predetermined relative positions for devices in a local network group; and

(ii) predetermined device identifiers corresponding to the predetermined relative positions, respectively, each predetermined device identifier providing an attribute for distinguishing a device from among a plurality of devices;

(b) receive a control program being configured to control devices in a local network group, the control program also being configured to reference devices in a local network group using the device configuration;

(c) send an addressing command message to devices in the local network group, the addressing command message being configured to generate Internet Protocol (IP) addresses for the devices in the local network group, the addressing command message also being configured to produce an addressing complete message providing;

(i) actual relative positions for the devices in the local network group;

(ii) actual device identifiers corresponding to the actual relative positions, respectively; and

(iii) IP addresses for the devices in the local network group;

(d) compare the predetermined relative positions and the predetermined device identifiers from the device configuration to the actual relative positions and the actual device identifiers from the addressing complete message, respectively, to determine a match; and

(e) upon a successful match, execute the control program to control the devices in the local network group by using the IP addresses corresponding to the devices.

12. The industrial control system of claim 11, further comprising, upon failing to determine a match, preventing the control program from executing and sending an alert message.

13. The industrial control system of claim 11, further comprising providing the device configuration and the control program from a Human Machine Interface (HMI) in communication with the industrial controller.

14. The industrial control system of claim 11, wherein the attribute is a Common Industrial Protocol (CIP) identity object.

15. The industrial control system of claim 14, wherein the CIP identity object includes at least one of a Vendor ID, Device Type, Product Code and Serial Number.

16. The industrial control system of claim 11, wherein the industrial controller is a Programmable Logic Controller (PLC).

17. The industrial control system of claim 11, wherein the addressing complete message further provides Media Access Control (MAC) addresses for the devices in the local network group.

18. The industrial control system of claim 11, wherein the industrial controller and devices are connected in a linear topology.

19. The industrial control system of claim 11, wherein the industrial controller and devices are connected in a ring topology.

20. The industrial control system of claim 19, wherein the industrial controller is a ring supervisor operating to provide a transmission path around a failure point in the ring topology.