У вашего броузера проблема в совместимости с HTML5
Step by step setting up a Hitachi WJ200 VFD for Mach3 modbus control.
While setting up the brain I accidentally mix up the configuration numbers for run/stop and frequency. In the brain the first tree should have terminated with configuration #1 for frequency , and the 2nd tree should have terminated with configuration #0 for the run/stop setting.