der CR16 sagt normalerweise das der iButton entweder ein Passwort erwartet oder aber das die Batterie leer ist. Vorraussetzung ist das der Elektrische kontakt zum iButton sauber funktioniert, Wenn da irgendwo ein wackler drinnen ist kann auch das das Problem sein.
Leider gibts keine möglichkeit von Software Seite zu erkennen was der Fall ist. Dank Umzug sind unser iButtons & Adapter gerade irgendwo tief in Kisten im neuen Haus vergraben und ich komme da nicht dram um die Schritte mal aus zu probieren mit denem man das manuell überprüfen kann.
Der iButton hersteller beschreibt
hier wie man vorgehen muss:
Zitat:
Distinguishing Between an Incorrect Password and a Drained Battery
Disregarding a bad electrical contact between 1-Wire adapter and iButton, an invalid CRC16 can result from the viewer not knowing the logger's password or a drained logger battery. The current OneWireViewer (version 3.15.50 and older) cannot distinguish between these two conditions. The only memory area that can be accessed without the password is the logger's 32-byte scratchpad. The test is simple: select the logger in question, open the Memory tab, and select memory bank Scratchpad with CRC and Password. In case of a good battery, the CRC16 is valid and the scratchpad contents are displayed in the viewer's main window. If the CRC is invalid, the battery is bad and no scratchpad contents is displayed. In case of a good battery, if desired, one can overwrite one or more of the scratchpad data bytes and then click on the Commit Changes button. The new data will be accepted and can be verified through refresh. This is the good news. The bad news is that one now needs to find the correct passwords. After the passwords are identified, they need to be entered through the Set Software Password function on the Password tab. After this step, refresh the mission results on the Mission tab and all functions of the logger iButton are accessible again. Note that the OneWireViewer does not store passwords in a file; they are lost when the program is closed.
Vielleicht hilft dir das etwas weiter