For exporting maps from Open Street Map, you should use:
http://maperitive.net
and put the files in:
C:\Program Files\Inductive Automation\Ignition\webserver\webapps\main\tiles
with the directory {z}/{x}/{y}
In perspective, you will have to change the tile url:
From:
https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png
To:
http://W.X.Y.Z:8088/main/tiles/{z}/{x}/{y}.png
and set the right init.center.lat/lng according to the data you have provided.