Ignition Edge Panel- Bad_GatewayComOff

My customer had issues getting parts for a project that we started last year, so I've set Ignition aside for about a year. Now, the OnLogic PC is installed, along with the touch-screen monitor, and I'm revisiting how to establish communication with the ControlLogix PLC to start making the screens needed to control this plastic extruder. I'm using my laptop and a CompactLogix PLC to make a test application before creating it on the OnLogic PC (and then using the license I purchased from them).

I downloaded Ignition to my new laptop, downloaded designer and chose Edge in the setup, added the Allen Bradley Logix family driver, and the PLC's IP address. In Designer, I uploaded the PLC tags I needed from the CompactLogix and used a bit address for a basic on/off toggle button. Everything looks great until I try testing it. Then I get the following error: (I'll see if the pic uploads). It's probably something really simple, but it doesn't make sense yet. My connection did not time out, and the color was green, not yellow. What info can I give that would help to figure out where I went wrong?

You are using "Preview" in the designer. It isn't quite the same as a Vision Client. In particular, unless you configure it otherwise, designer "Preview" mode does not permit writing to tags or updates to your DB. You have to deliberate set the designer's communication mode to "read/write" instead of the default "read/only".

Consider spending some time on Inductive University. Basic usage information, like this question's topic, is covered there.

Change Designer to Read/Write Mode

This:
image

BTW... Yes, I forgot about turning on the write mode. Thanks!

At this point, I'm about 50% through the videos.