The HT101 operating terminal with firmware version v102 (serial numbers till 85000) may cause the problem with settings new information to time scheduler in PLC. When time scheduler is set the nearest same state change is deleted. In these firmware version is also not possible to upload configuration or firmware file with active DHCP function and the time function in object Digital setter is not active.
These problems are fixed in new firmware version 103 for HT101 (upload from web interface). New firmware version is available here.
Please accept our apologies for your difficulties. If you need more information, contact Domat Control System technical support at firstname.lastname@example.org .