Communication In An Industrial Automation System

An arrangement for improving communication between devices of an industrial automation system running automation applications, which devices comprise a first and a second endpoint device of a communication path for a data stream through a time sensitive network and for which data stream a corresponding application has an application cycle time at which the first and second endpoint device are to transmit data to each other, the arrangement including the first endpoint device having a processor acting on computer instructions, whereby said first end point device is operative to:

• detect a communication degradation of the data stream, which communication degradation is indicative of congestion in the data communication network, and
• perform a congestion limiting activity from a group of congestion limiting activities, which group at least includes an activity of increasing the application cycle time of the data stream.

An industrial automation system comprising a time sensitive network devices running automation applications and an arrangement improving communication between devices which include first and second endpoints of a communication path for a data stream through a time sensitive network and for which data stream a corresponding application has an application cycle time at which the first and second endpoint device are to transmit data to each other, the arrangement including the first endpoint device having a processor acting on computer instructions, whereby said first end points are operative to:

• detect a communication degradation of the data stream, which communication degradation is indicative of congestion in the data communication network, and
• perform a congestion limiting activity from a group of congestion limiting activities, which group at least includes an activity of increasing the application cycle time of the data stream.

A computer program for improving communication between devices of an industrial automation system running automation applications, which devices comprise a first and a second endpoint device of a communication path for a data stream through a time sensitive network and for which data stream a corresponding application has an application cycle time at which the first and second endpoint device are to transmit data to each other, said computer program including a computer program code which when run by a processor of the first endpoint device causes the first endpoint device to:

• detect a communication degradation of the data stream, which communication degradation is indicative of congestion in the data communication network, and
• perform a congestion limiting activity from a group of congestion limiting activities, which group at least includes an activity of increasing the application cycle time of the data stream.

A computer program product for improving communication between devices of an industrial automation system running automation applications, said computer program product comprising a storage medium with computer program code which when run by a processor of the first endpoint device causes the first endpoint device to:

• detect a communication degradation of the data stream, which communication degradation is indicative of congestion in the data communication network, and
• perform a congestion limiting activity from a group of congestion limiting activities, which group at least includes an activity of increasing the application cycle time of the data stream.