Siemens SIMATIC S7-1200 Manual page 195

Table 10- 5 Parameters for the MC_Power instruction
Parameter and type
Axis IN
Enable IN
StopMode IN
Status OUT
Busy OUT
Error OUT
ErrorID OUT
ErrorInfo OUT
Easy Book
Manual, 11/2011, A5E02486774-04
Data type Description
TO_Axis_1 Axis technology object
Bool
FALSE (default): All active tasks are aborted according to the

parameterized "StopMode" and the axis is stopped.
TRUE: Motion Control attempts to enable the axis.

Int
0: Emergency stop - If a request to disable the axis is pending, the

axis brakes at the configured emergency deceleration. The axis is
disabled after reaching standstill.
1: Immediate stop - If a request to disable the axis is pending, this
axis is disabled without deceleration. Pulse output is stopped
immediately.
Bool Status of axis enable:
FALSE: The axis is disabled.

–
–
–
TRUE: The axis is enabled.

–
–
Bool False: MC_Power is not active.
TRUE: MC Power is active.
Bool FALSE: No error
TRUE: An error has occurred in motion control instruction "MC_Power"
or in the associated technology object. The cause of the error can be
found in parameters "ErrorID" and "ErrorInfo".
Word Error ID for parameter "Error""
Word Error info ID for parameter "ErrorID"
The axis does not execute motion control tasks and does not
accept any new tasks (exception: MC_Reset task).
The axis is not homed.
Upon disabling, the status does not change to FALSE until the
axis reaches a standstill.
The axis is ready to execute motion control tasks.
Upon axis enabling, the status does not change to TRUE until
the signal "Drive ready" is pending. If the "Drive ready" drive
interface was not configured in the axis configuration, the status
changes to TRUE immediately.
Motion control is easy
10.2 MC_Power instruction
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