ModBus Tester Problem

Hallo Leute,

ich habe immer wieder ein Problem mit einer Fehlermeldung vom ModBus Tester.

Was will mir das Tool mit der Meldung sagen: "Failed to update the device control block"

Irgendwann kommt die Meldung und plötzlich ist sie auch wieder für Tage verschwunden???
Ohne das irgendwas geändert wurde

Gruss
Thorsten

Hallo Rolf,

wann ist der Fehler beseitigt?

Gruß
Thorsten

Things haven't changed and my previous answer is still valid. Compiler generates bad PMBL file, and it will be addressed after Rolf's compiler changes for XMEGA MODBUS RTU. As a workaround you can use mentioned free command line utility MODPOLL for testing, or dig your old compiler EXE before big XMEGA changes (sorry, I don't know which version was that) where PMBL file was still generated without this bug, and use it just once to generate PMBL. Then you can copy it over your new file after each compile (or before using tester by making a BAT which first copies PMBL and then starts modbus tester), or you can try to see if making the file read only would prevent compiler to overwrite it. You can also try to open PMBL file in editor and try to find string value where modbus tester expects a number to fix it by hand. I do not remember but I think it was something like having a string instead of number for COM port, or something like that.