Mitsubishi Electric Fatec GOT2000 Series Basic Training Textbook page 220

(3) Software available on one personal computer
When multiple kinds of software are activated on one personal computer, only one
of them is available for communications using the FA transparent function.
Do not concurrently perform any communications using the FA transparent
function. (Offline operation with each software is available.) Do not communicate with the GOT from GT
Designer3 (including writing package data) while another MELSOFT application is using the FA transparent
function.
Online operation
GX Works2 etc.
GT Designer3
Communication with GOT
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