I am trying to develop a workflow that reads opcua values in a periodic manner using timer and opcua read node. By default, the timer node does not support adding any data to it, the opcua read node requires data.myinstructions to be passed as JSON. So with a timer node, it is impossible to club. do the needful to solve this
We have an open feature request for this exact thing - the option to add a default payload to a Timer Trigger, same as you can for the Virtual Button. I will add your +1 to the request.
An easy workaround in the meantime is to follow up your Timer Trigger with a Mutate Node using one or more Set Value operations to build the configuration you need.