Originally Posted by
mactec54
The G49 will still cancel the tool offset it is best to remove it, it should never be in the safety line, if you had a need to use a G49, it should only be used after the G43, if you think you need it, which in most cases it is never needed
G49 is a G-code that helps in the cancelation of both G43 and G44 tool length compensation. If you use the offset amount as H00, it can also scrap the tool length compensation.
Good that you have found that the standard tool change T-- M6 works so apart form getting the offset sorted you should be able to use standard Fanuc format code