Hello,
i have never done this but i think is a little bit similar to this topic
Axis Coupling via Powerlink
The Powerlink can be use to synchronise the Task-Class System of both PLCs if you set up the System Timer to the Powerlink Devices “PLC1-Master” and “PLC2-ICN-Slave” and if all have the same Timing.
AS-Help Powerlink Synchronisation
If you find a good solution, we would be happy to read about it.
If there are more questions feel free to ask.
Greetings
Michael