Danfoss 176F7300, Manual, Page: 90 / 90

VLT ® MICRO
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Error Message
IC 75176 or CPU communication port damaged
Transmission Bus Error (The time interval between commands is
too short.) Please keep an interval of 10 ms at least after the return
of a command. If there is no command returned, also keep an
interval of at least 10 ms for the same reason.
Character Frame Error (check whether the Baud rates comply with
data frame)
Data out of range (check whether the input data are out of range)
Meaning
Check Sum Error (make sure the Check Sum is correct)
Transmission Time Out
Reserved
Reserved
34 Data Characters:
• 2 ASCII characters as Error Code
• 2 ASCII characters as LED
• 4 ASCII characters as frequency command (FXX.XX)
• 4 ASCII characters as output frequency (HXX.XX)
• 4 ASCII characters as output current (AXX.XX)
• 4 ASCII characters as DC-BUS voltage
• 4 ASCII characters as output voltage
• 2 ASCII characters as multi-step speed
• 4 ASCII characters as operational time
• 4 ASCII characters as counter value
5 AC Drive Communication Error:
The AC drive receives the messages, but detect a communication error, thus no
response is returned. But there will be an error message "CExx" displayed on the
keypad. The master device will eventually process a time out condition. The "xx" of
CExx" is a decimal code, the meaning of the error message is as follows:
88