MC_GrpHalt
This function block leads to a controlled motion stop. It aborts every ongoing command by other motion FBs.
The axis group changes to the “GroupMoving state until velocity 0 is reached. When the “Done” is set, the axis group state changes to “GroupStandby”.
Block diagram

FB parameters
| VAR_IN_OUT | ||
| Variable name | Data type | Description | 
| AxesGroup | AXES_GROUP_REF | Axis group reference | 
| VAR_INPUT | ||
| Variable name | Data type | Description | 
| Execute | BOOL | Starts the command on the rising edge. | 
| BufferMode | MC_BUFFER_MODE | The input defines when a job is activated provided that other jobs are already active when the FB is commanded or are waiting for execution. The following modes are supported: mcAborting = 0 mcBuffered = 1 | 
| VAR_OUTPUT | ||
| Variable name | Data type | Description | 
| Done | BOOL | 0 velocity was reached; the axis is at standstill. | 
| Busy | BOOL | TRUE indicates that the FB is executing a job. | 
| Active | BOOL | The command is not yet completed. | 
| CommandAborted | BOOL | The stop job was aborted by another job. | 
| Error | BOOL | TRUE indicates that an error occurred. | 
| ErrorID | WORD | Error code | 
| JobID | UDINT | Ordinal number of the last job sent by the FB. |