HIGH SPEED BUS PROTOCOL WITH PROGRAMMABLE SCHEDULER

• US 20080062892A1
• Filed: 09/07/2006
• Published: 03/13/2008
• Est. Priority Date: 09/07/2006
• Status: Abandoned Application

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Dodgen, David R., Souders, Keith A., Haque, Jamal, Becker, Karl H.
• Application Number:
  US11/470,873
• Publication Number:
  US 20080062892A1
• Time in Patent Office: Days
• US Class Current: 370/257
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

A method of adapting the frequency of a protocol in a communication system is provided. The method includes changing a bus cycle used by communication nodes in a communication system based on cycle interval instructions.

Claims

1. A method of adapting the frequency of a protocol in a communication system, the method comprising:

changing a bus cycle used by communication nodes in a communication system based on cycle interval instructions.

2. The method of claim 1, wherein changing the bus cycle in each node further comprises:

programming a counter in each communication node to the bus cycle.

3. The method of claim 1, further comprising:

instructing a cycle master communication node to change the bus cycle;

generating a maintenance packet including the bus cycle; and

passing the maintenance packet to each communication node in each communication system.

4. The method of claim 3, further comprising

programming each counter based on the bus cycle in the maintenance packet.

5. The method of claim 1, wherein the bus cycle increases the frequency of communications in the communication system.

6. The method of claim 1, wherein the bus cycle decreases the communications in the communication system.

7. A method of adapting a communication protocol between communication nodes, the method comprising:

processing cycle interval instructions at a cycle master node;

generating a maintenance packet including a bus cycle based on the cycle interval instructions;

sending the maintenance packet to at least one other communication node; and

setting the counter on each of the at least one other communication node based on the bus cycle in the maintenance packet.

8. The method of claim 7, further comprising:

setting a counter of the cycle master node based on the bus cycle.

9. The method of claim 7, wherein setting the counter on each of the at least one communication node further comprises:

programming each counter to conduct a rollover count based on the bus cycle.

10. The method of claim 7, further comprising:

increasing the time interval between maintenance packets based on the bus cycle.

11. The method of claim 7, further comprising:

decreasing the time interval between maintenance packets based on the bus cycle.

12. A communication system comprising:

a plurality of communication nodes, each node having a programmable counter adapted to count the time interval between the receipt of maintenance packets; and

a cycle master node adapted to process instructions regarding a bus cycle of the communication system, the cycle master node further adapted to pass the bus cycle to the plurality of communication nodes, wherein the programmable counter in each communication node is adjusted to the bus cycle.

13. The communication system of claim 12, further comprising:

a serial bus coupled between the plurality of communication nodes and the cycle master node.

14. The communication system of claim 12, further comprising:

at least one bridge adapted to couple a first system of the communication system to a second system of the communication system.

15. The communication system of claim 12, further comprising:

at least one port at each node to couple a communication link between communication nodes.

16. The communication system of claim 12, wherein the bus cycle increases the frequency of communications in the communication system.

17. The communication system of claim 12, wherein the bus cycle decreases the frequency of the communications in the communication system.

18. The communication system of claim 12, wherein the communications system is bridged across multiple dissimilar bus protocols linking the plurality of communications nodes into a synchronized system.