Fronius IG 300 Bedienungsanleitung Seite 192

Value
0x09
0x0A
190
Explanation
Wrong command for device or option
The command cannot be carried out with the selected device or option
Indicates that two devices in the network have the same network number.
The device that detected the error overwrites the current message with an
error frame of this error message
NOTE! When a query is sent to a device that does not exist in the network, the
sender receives the unanswered data frame back as a response.