Lighthouse PLC's are the Hitachi guys in America. It's been several years since I worked on a Hitachi PLC, but I seem to remember I could view the program with one of the generic IDE's I had, but had to purchase a license to go online and edit. I'm working on the other side of the country and don't have access to the laptop with the Hitachi software on it. When I get home I'll check it out and post more details.