It wasn't just software. GOC 43 was a hardware-software handshake protocol.
: This document provides step-by-step instructions for installation, project creation, and hardware configuration. mitsubishi goc 43 software download
: GOC Toolkit V3 (integrated PLC and HMI programming tool) It wasn't just software
The (Graphic Operation Controller) is a hybrid PLC and HMI device that uses the GOC Toolkit V3 for programming. Unlike standard Mitsubishi MELSEC software like GX Works3, which is commercial, the GOC Toolkit is generally provided as a free download for this specific series. Software Overview which is commercial