The HMI must remain matched to the selected MT8121iE target, project file, controller drivers and every serial, Ethernet, USB and SD assignment. Commissioning verifies boot, communications, screen behavior, alarm functions and retained data.
Important Notice: Confirm MT8121IE/MT8121iE, EasyBuilder Pro target and project, 24 Vdc supply, protective earth, COM1/COM3 wiring and isolation, Ethernet addressing, USB/SD use and controlled interface-test evidence before commissioning.
Weintek MT8121IE Manuals & Downloads
These documents are different: the first consolidates model-specific technical and system data; the second is the official manufacturer datasheet for MT8121iE.