Additional Information
Note: The operating system of your real-time target is listed on the
System Settings tab of NI MAX. Targets affected by this issue will have an OS name beginning with
NI Linux Real-Time ARM.
You can modify
ptp.conf by using WebDAV to transfer the file to and from your host computer, or you can access and modify the file via the secure shell (SSH).
All non-RT-Linux controllers ship with masterslave as the default setting, meaning they can switch between the master and slave state. They will be be chosen as a 1588 master if their timekeeping ability is better than any other 1588 device on their network.
You can use the
IEEE 1588-2008 Find Clocks.vi example VI shipped with NI-TimeSync to verify that there is a master available on your 1588 network. This VI is available in the
NI Example Finder under
Tasks»
Hardware Input and Output»
Timing and Synchronization»
Time-based»
IEEE 1588-208 Find Clocks.vi.
Run the VI on a host computer that is on the same subnet as the 1588 network. The VI will show information that includes the Clock ID and Clock State, as shown below. Note that National Instruments 1588 devices, as well as many others, use the MAC address as part of the clock ID.
More information about monitoring and configuring NI-TimeSync on NI devices is available in the article titled "
Using NI-TimeSync to Configure IEEE 1588 and 802.1AS Time References".