Play time of RT and EtherCAT

Hello

I have a NI 3110 industrial controller, which controls multiple NI 9144 EtherCAT slaves. Due to the drift to inherit the clock in the controller, I need to set the absolute of the Windows part of the program time periodocally. I do that with success using the VI 'RT Set time and date' of the pallet in real time. However, after setting the time on the controller, the 9144 chassis an error 2147137804 - "Master is no longer sync'd with the acting as slave the reference clock device". To get rid of it, the only solution I've found so far is to turn engine active scan configuration and return to active mode.

Since this isn't a good solution to the problem, I wanted to know if there is a better?

Thanks for any help,

Christoph

Open the rt.ini - or on your RT target and look for the following section:

[TIME SYNCHRONIZATION]
source. EtherCAT.Enable = TRUE
source. EtherCAT.usable = TRUE
source.ethercat.masterID = 0
source_priority = ethercat;

Change the first line
source. EtherCAT.Enable = FALSE

This will make the slaves are more to synchronize with the first slave. Instead, all slaves synchronize the master clock. See if this helps you in this situation.

DirkW

Tags: NI Products

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