diff --git a/Modbus.Net/Modbus.Net.Core/App.config b/Modbus.Net/Modbus.Net.Core/App.config
deleted file mode 100644
index 8874465..0000000
--- a/Modbus.Net/Modbus.Net.Core/App.config
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<configuration>
-  <appSettings>
-    <add key="COM" value="COM1" />
-    <add key="FBoxOpcDaHost" value="opcda://localhost/FBoxOpcServer" />
-    <add key="IP" value="192.168.1.1" />
-    <add key="IPConnectionTimeout" value="5000" />
-    <add key="ModbusPort" value="502" />
-    <add key="OpcDaHost" value="opcda://localhost/..." />
-    <add key="OpcUaHost" value="opc.tcp://localhost/..." />
-    <add key="SiemensPort" value="102" />
-  </appSettings>
-</configuration>
\ No newline at end of file
diff --git a/Modbus.Net/Modbus.Net.Core/appsettings.json b/Modbus.Net/Modbus.Net.Core/appsettings.json
new file mode 100644
index 0000000..12febb4
--- /dev/null
+++ b/Modbus.Net/Modbus.Net.Core/appsettings.json
@@ -0,0 +1,10 @@
+{
+  "AppSettings": {
+    "COM": "COM1",
+    "IP": "192.168.1.1",
+    "ComConnectionTimeout": "3000",
+    "IPConnectionTimeout": "5000",
+    "ModbusPort": "502",
+    "SiemensPort": "102"
+  }
+}
\ No newline at end of file