Hello "How did you check that the eeprom is ok ???" I have two of the same machine, to TSX 17 , may the two have the same programs .EEPROMs swapped between them and one machine works, performs program RUN mode, Unfortunately, the second machine at all times be able to STOP mode :( This happened after power failure :) if the executive program is stored in EEPROM plc is, why one does it and the other does not ?