We are installing 5 hmi's on a site. The original plan called for each hmi to remotely connect to the central ignition server. However, the company is now concerned that if connection to that server is severed they won't have local control.
To solve this, we want to use a currently existing ignition edge (running the same project and located in the same room as the 5 new hmis) as a remote tag provider for the 5 new ignition edges. This way only the server and 1 edge are polling the plc rather than 7 separate project's all polling the same plc.
Is this doable from edge? or should the local ignition edge be upgraded to standard to make it work?
Hey Alex! Edge doesn't allow another Edge system to be its remote tag provider. For that functionality, standard will be required. With the standard edition, it could create a remote tag provider connection to all the other Edge system.
As a workaround, you might be able to set up the OPC server in Edge to allow for other Edge instances to connect to it. The down side here is of course that you won't get alarm synchronization and other niceties that come with using a remote tag provider, but you would have the same data.
This kind of sprawl (and associated complexity) is a key reason I strongly recommend using Standard Ignition on a site, perhaps with redundancy, as soon as second Edge installation is contemplated.