Siemens SIMATIC S7-1200 Manual page 200

Motion control is easy
10.4 MC_Home instruction
Table 10- 10 Override response
Mode Description
0 or 1 The MC_Home task cannot be aborted by any other motion control task. The new MC_Home task does not
abort any active motion control tasks. Position-related motion tasks are resumed after homing according to
the new homing position (value at the Position input parameter).
2 The MC_Home task can be aborted by the following motion control tasks:
MC_Home task Mode = 2, 3: The new MC_Home task aborts the following active motion control task.
MC_Home task Mode = 2: Position-related motion tasks are resumed after homing according to the new
homing position (value at the Position input parameter).
3 The MC_Home task can be aborted by the following
motion control tasks:
MC_Home Mode = 3

MC_Halt

MC_MoveAbsolute

MC_MoveRelative

MC_MoveVelocity

MC_MoveJog

Homing refers to the matching of the axis coordinates to the real, physical drive position. (If
the drive is currently at position x, the axis will be adjusted to be in position x.) For position-
controlled axes, the entries and displays for the position refer exactly to these axis
coordinates.
Note
The agreement between the axis coordinates and the real situation is extremely important.
This step is necessary to ensure that the absolute target position of the axis is also achieved
exactly with the drive.
200
The new MC_Home task aborts the following active
motion control tasks:
MC_Home Mode = 2, 3

MC_Halt

MC_MoveAbsolute

MC_MoveRelative

MC_MoveVelocity

MC_MoveJog

Manual, 11/2011, A5E02486774-04
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