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Last Modified: February 7, 2020

Indicates the master/slave state that the interface is using for the Ethernet PHY.

This property is configured using NI MAX or the System Configuration property PHY State Configured. Slave (0) and Master (1) PHY states are defined in IEEE 802.3.

Data type: datatype_icon

Long Name: Interface:Ethernet:PHY State

Class: XNET Session

Permissions: Read

Two PHYs that are physically connected must be configured to use opposing PHY States. In other words, one PHY must be configured to be the Master, and the other PHY must be configured to be the Slave.

In traditional Ethernet networks, this master/slave state is negotiated automatically. However, in automotive Ethernet networks such as IEEE 100BASE-T1, the master/slave state is configured statically and is typically determined by the PHY State setting of the ECU that you are connecting to.

Where This Property Is Available:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application

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