This file, when used without a keycode, will install the latest version of DirectSOFT100, the "free" version of DirectSOFT5. DirectSOFT100 gives you the same features as the full version of DirectSOFT5 but allows only 100 Words of ladder code to be downloaded to the PLC. Use the DirectSoft5 keycode you received when purchasing DirectSOFT5 to install the latest release of PC-DSOFT5, the full version of DirectSOFT5.