Method and control device for the operation of a contact-free transmission system for an IO link

• US 9,697,164 B2
• Filed: 05/11/2015
• Issued: 07/04/2017
• Est. Priority Date: 05/13/2014
• Status: Active Grant

• Current Assignee: Balluff Verwaltungsges mbH
• Original Assignee: Balluff Verwaltungsges mbH
• Inventors: Beyer, Matthias, Franz, Stephan
• Primary Examiner(s): Shyu, Jing-Yih
• Application Number:
  US14/708,523
• Publication Number:
  US 20150331827A1
• Time in Patent Office: 785 Days
• CPC Class Codes: G05B 19/4185 characterised by the network communication
• CPC Class Codes: G06F 13/20 for access to input/output bus
• CPC Class Codes: G06F 13/423 with synchronous protocol
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

In a method and a control device for the operation of a transmission system for an IO link, wherein at least one cable-free transition between an IO link master and at least one IO link device is provided, and wherein the IO link device provides a minimal cycle time for a communication cycle, it is particularly provided that the minimal cycle time provided by the IO link device is increased in such a manner that a temporal delay caused by the cable-free transition is added to the minimal cycle time.

Claims

1. A method for operating a transmission system for an IO link, wherein at least one cable-free transition between an IO link master and at least one IO link device is provided, and wherein the IO link device provides a minimal cycle time for a communication cycle, wherein the minimal cycle time that is provided by the IO link device is increased in such a manner that a temporal delay caused by the cable-free transition is added to the minimal cycle time, comprising the following steps:

monitoring the communication between the IO link master and the at least one IO link device;

detecting an inquiry of the IO link master with regard to the minimal cycle time to the at least one IO link device;

intercepting a corresponding response of the IO link device;

increasing the minimal cycle time so intercepted by the temporal delay caused by the cable-free transition; and

communicating on the minimal cycle time so increased.

2. The method according to claim 1, wherein the cable-free transition is carried out by inductive or capacitive coupling or by optical transmission or radio transmission.

3. The method according to claim 1, wherein the steps are performed by the IO link master.

4. The method according to claim 1, wherein the steps are performed by an inductive coupler.

5. The method according to claim 1, wherein the minimal cycle time that is increased by the temporal delay caused by the cable-free transition is forwarded to the IO link master and is used as a basis for the subsequent time control of the IO link communication between the IO link master and the at least one IO link device.

6. A control device for operating a transmission system for an IO link, in which at least one cable-free transition between an IO link master and at least one IO link device is provided, wherein the IO link device provides a minimal cycle time for a communication cycle, further comprising at least one of a calculator or a control for increasing the minimal cycle time provided by the IO link device so that a temporal delay caused by the cable-free transition is added to the minimal cycle time, and wherein the control device further comprises a communication monitor monitoring the communication between the IO link master and the at least one IO link device, a detector detecting an inquiry of the IO link master with regard to the minimal cycle time, a response interceptor intercepting a corresponding response by the at least one IO link device, a calculator calculating a modified minimal cycle time based on the delay caused by the cable-free transition, and a cycle time communicator communicating the correspondingly modified minimal cycle time.

7. The control device according to claim 6 for a transmission system for an IO link, in which the cable-free transition is carried out by inductive or capacitive coupling or by optical transmission or radio transmission.