I appreciate your patience but I think I am getting close to understanding
If I use Edge Panel (Vision or Perspective) there is no database connections so when I say "Vision will have database connections" I mean Vision connected to a standard gateway.
I do not want to use Edge. I have many of same type of machine but if for some reason any of these tools looses connection and is isolated I still need to be able to control them. What would you suggest.
It may not be an Ignition problem. Perhaps a tiny, cheap C-More HMI is all you need.
Me, I'd make the connection robust so you simply don't have to do anything. Share more about why this happens if you want better advice.
I don't agree with this. There are many scenarios where this happens all the time. For instance, I was just at a new plant where we're not the main integrator, yet we had to provide an HMI and PLC to control all the breakers for the switchgear. We used Ignition Edge. Panel is installed and commissioned by us for the customer and yet the site still uses Ignition Standard for their main HMI/SCADA. We weren't allowed to touch their system as it wasn't in our scope. I believe they're setting up our Edge gateway as a remote tag provider to pull the data into their main gateway, but for us to complete our scope of work, we have no other way to do it besides having our own standalone system. Controlling the main power feed to the plant shouldn't require a healthy connection to the servers.
The same goes for all the other vendors out there building fully OEM standalone systems and adding them to a functioning plant. Keep the control local to the HMI, and if you want the tags brought into the main SCADA, that's fine, but that's their scope, and I'm not going to be responsible for their equipment by replacing their HMI with a remote connection to the central gateway.
I work at a large company with an IT dept and occasionally there are connectivity issues. I don't think I have ever been anywhere that didn't have occasional interruptions.
I work with many large companies (Fortune 500 and larger). Some have competent IT and some do not. Making redundant network connections (dual path) is not difficult.