PG2000 is still the intellectual property of Panasonic Industrial Devices (formerly Panasonic Electric Works). Distributing PG2000v2.41.zip without permission technically violates copyright. However, given that Panasonic no longer offers it for sale, provides no technical support, and has moved to FPWIN Pro, enforcement is effectively nonexistent for end-users maintaining legacy equipment. That said, always check your local laws and company policies.
The filename itself tells a story to those familiar with software distribution: PG2000v2.41.zip
If you cannot get PG2000 working, consider these alternatives: PG2000 is still the intellectual property of Panasonic