By default, the tool only scans your current subnet (e.g., 192.168.1.x). To find cameras on a different subnet (e.g., 10.10.10.x), you cannot use broadcast. Instead:
The Panasonic Easy IP Setup Tool is a proprietary, lightweight software utility designed for network discovery and initial configuration of Panasonic IP-based devices (including network cameras, intercom systems, and projectors). This paper provides a formal technical guide to sourcing, downloading, and validating the legitimate software package, alongside best practices for its deployment in a segmented network environment.