Multi-device task not starting with TSN and impossible to understand is TSN is working

[maxs29]

Hello,

we have 3 cDAQ-9189 connected with a cisco router with TSN support enabled and through a media converter. From the Cisco TSN interface we see TSN packets flowing, so we only *suppose* that they are correctly syncronized.

BUT, the multi device task does not start when we run the task:

Error -201483 occurred at DAQ Assistant
Possible Reason(s):

The selected master for the configured multi-device task is not able to export signals. Make sure that the first channel in the task is from a device on a chassis that has an NI 9469 capable of exporting signals to the slave devices. If you have any delta-sigma modules in your task, at least one must be in the master chassis. For time-based synchronization, ensure all the chassis in the task are in the same synchronization network.

How can we debug the TSN network for:

1. know if TSN is actually working?
2. know who is the gran master?
3. understand why the multi device task is not starting?

Thank you in advance.

[l.hovs]

Hi maxs29,

I found sequence of steps how to solve this issue.

To correct this error, simply ensure any analog input step only includes channels from modules in a single chassis. After configuring the hardware in NI MAX, do the following:

1. Click Add Step in the top left corner of the SignalExpress window.
2. Expand Acquire Signals.
3. Expand DAQmx Acquire.
4. Expand Analog Input.
5. Select a measurement type.
6. Add channels to task, making sure only modules from a single chassis are included.
7. Repeat steps 1 - 6 for every chassis that needs to be added to the SignalExpress project.

Find more information in these two articles, 

Error -201484 When Synchronizing Multiple cDAQ Chassis With 9469 - NI

Why do I get Error -201483 in SignalExpress When Not Using an NI 9469 Module? - NI

Regards)