Failure to connect: Modbus Error

[scsm]

Modbus protocol is usually used for serial port communications. I'm sure someone from Phidgets can correct me if I'm wrong, but I don't think phidgets support modbus commands.

Typically, you would use modbus with serial-connected devices that support these. I've used it when writing C# PC-software connecting to CO2 sensors.

[MAKOMO]

The Artisan roasting app runs its own discussion forum which may be able to help with such configuration issues: https://artisan-scope.org/discussions/