Hi,
good news! :)
i have solved the problem!
the command that i have used to change the mac address "sudo revpi-factory-reset compact 81919 C83E-A710-253D" was wrong !
the right command tha i had to use is "sudo revpi-factory-reset connect 81919 C83E-A710-253D" because i have a RevPi Connect ...

Hi,
i cant log-on on web interface... the password doesn't work ! ( i never changed it)
How i can restore or reset the password of the web interface?

Thanks

Hi,
after i had reset the mac address if my RevPi Compact with the command " sudo revpi-factory-reset compact 81919 C83E-A710-253D",
my modbus TCP ttyRS485 interface it doesn't work anymore.

at prompt also i receive this message
pi@RevPi81919:~ $ piTest -r Modbus_Master_Status
Cannot find ...

Hi,
I bought another RevPi Connect+ device but I have again the same modbus communication problem with Modbus RS485 on /dev/ttyRS485

- if i use '/dev/ttyUSB0' (with usb/rs485 adapter) all work correctly !!!
- if i use '/dev/ttyRS485' (with two wire +- connected to modbus rs485 pinout) doesn't work ...

Hi Nicolai,

i had update ro Buster the revPi and seems to be ok, but now i have this problem via SSH " Server does not support diffie-hellman-group1-sha1 for keyexchange"
How i can solve it?:



Thanks

Hi Nicolai,
Yes on my device there is Stretch (no particolar reasons, but only because i had buy this device 24 months ago').
I have to update to Buster

this is other screenshot pi.modbus-master status:

Hi Nicolai,

this is the kernel.log:
https://i.ibb.co/5WmSHrf/kernel.jpg

Slave option is disabled:
https://i.ibb.co/wptD71Y/slave.jpg

is there any system bug on the RS485 port that needs updating?

I need urgent assistance because we are buying 50 pcs (for our monitoring system) but we are ...

Hi Nicolai
I'll send you the Kernel Log tomorrow.

Other useful information about my problem:
if i use ' /dev/ttyUSB0 ' (with usb/rs485 adapter) all work correctly !!!
[/u]if i use ' /dev/ttyRS485 ' (with two wire +- connected to modbus rs485 pinout) doesn't work !!!
Also the command piTest -r ...

Hi,
i have a communication problem with Modbus RTU communication on MyrevPi Connect +.
The communications are working well but, a few hours ago, I had this problem when I launch my Python program (influxDB.py) to read the modbus RTU data from my device. Now not found !
I use minimalmodbus driver ...