# ID 44057

FB error: MC_Power; Power can't be switched on for a CANopen drive, because a drive bus error occurred.
Description | The error is output because the function block is to send an order to the motion controller that leads to data being exchanged via the fieldbus using the CANopen protocol. However, the fieldbus is not ready for cyclic data transmission.
Response | Class | - | As long as the error is present, the function block sets the "Error" output to TRUE and outputs the error code at the "ErrorID" output. Cyclic checks whether the fieldbus is ready to communicate. If it is then detected that the field bus is ready for cyclic data transmission, the further behavior depends on the type of the function block. If the type is

MC_Power,
the reaction depends on the values assigned to inputs "Enable", "Enable_Positive" and "Enable_Negative". Is still TRUE assigned to these inputs the drive will be enabled as long as no other error occurs.

Solution | Class | - | Is the function block of type MC_Power, There is nothing to do, because the error is only displayed if the inputs "Enable", "Enable_Positive" and "Enable_Negative" are set to TRUE. You can still wait and check output "Status" that displays TRUE if the drive is switched on and under control.
Error type | -