Error 4029 · CNC 8055 M · CNC 8055 T
Message: Communication with the drive cannot be established. No response
Detection
On power-up.
Effect
It stops the movement of the axes and the spindle, eliminating all the enable signals and canceling all the analog outputs of the CNC. When detected from the position loop, it opens the position loop and sets the LOPEN mark to ·1·.
If it is in execution, it interrupts the execution of the part program of the CNC of all channels.
Besides this, it activates the external emergency output.
Cause
A drive is not responding to the signal sent by the CNC due to one of these causes:
The drive does not recognize the sercos board. The drive is locked up. The switch number has not been properly read. The SERCOS transmission speed has been set differently at the drives and at the CNC. General parameter SERSPD at the CNC and QP11 at the drives.
Solution
Save the SERCOS LOG into a file.
See the value of axis machine parameter SERCOSID of the axis causing the error.
Check that the ring contains a drive with the switch in that position.
Reset the drive because the drive only reads the switch on power-up.Check that the CNC and the drives have the same transmission speed. General parameter SERSPD at the CNC and QP11 at the drives.
Check that the drive does not issue sercos board. To do that look at the display of the drive. If it shows hardware errors, change the drive’s sercos board.
If there are no errors at that drive, set the switch of the drive to "1", reset it, set the CNC with a single Sercos axis and connect to the CNC. If it still issues the error, change the drive.
