EXTERNAL MODBUS CONNECTION WITH LEXIUM 32I

[salvioveneziano]

Hi, i have a problem with the writing of LXM32iETH drive's registers with function 16 (write multiple holding registers). In particular the problem returns the error  03 (illegal data values). I readed that there is a password that block the external modbus connection. Is there a mode to resolve this problem to disable the password or another methods for to write the registers thorough modbus tcp connection?

Regards.

Salvio Veneziano.

[kuers · Accepted solution]

Hello,

the LXM32iETH is designed to be controlled by PROFINET protocol only. ModbusTCP protocol is only implemented for comissioning software SoMove. ModbusTCP IO Scanning is missing at all. Only single commands may be possible to read and write. There is no Modbus manual for this device. BR Stefan Kuerz

[salvioveneziano]

Hello, thank you so much for your answer. I have a gateway modbus tcp to profinet, I can use it to comand servo? 

[kuers]

Hello, yes this would be possible. The PROFINET uses DriveProfileLexium1 which is set by default in the GSDML file. The cyclic data exchange is reading and writing 26 bytes input and output.

BR Stefan