diff --git a/js/application-settings-controller.js b/js/application-settings-controller.js
index 9728c5a..b1744be 100644
--- a/js/application-settings-controller.js
+++ b/js/application-settings-controller.js
@@ -224,8 +224,14 @@ function selectToolhead() {
   }
 
   if ($("#hasPlasma").is(':checked')) {
-    $("#ihsgcode").val("G38.2 Z-30 F100; Probe\nG10 L20 Z-3; Set Z Zero\n")
+    $("#ihsgcode").val("G38.2 Z-30 F100; Touch off Probe\nG10 L20 Z-3; Set Z Zero\n")
     $('#scommandscale').val(1000);
+    var xaxis = 740
+    var yaxis = 830
+    var zaxis = 80
+    $("#sizexmax").val(xaxis)
+    $("#sizeymax").val(yaxis)
+    $("#sizezmax").val(zaxis)
   }
 
   if ($("#hasLaser").is(':checked')) {