Ac Drive Communication Error - Danfoss 176F7300 Manual

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:
Error Message
bit 0 IC 75176 or CPU communication port damaged
bit 1 Data out of range (check whether the input data are out of range)
Character Frame Error (check whether the Baud rates comply with
bit 2
data frame)
bit 3
Check Sum Error (make sure the Check Sum is correct)
bit 4 Transmission Time Out
Transmission Bus Error (The time interval between commands is
too short.) Please keep an interval of 10 ms at least after the return
bit 5
of a command. If there is no command returned, also keep an
interval of at least 10 ms for the same reason.
bit 6
Reserved
bit 7
Reserved
VLT
Meaning
88
® MICRO