Siemens SIMATIC S7-1200

Technology instructions
10.3 Motion control
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
733
10.3.7.2
MC_Power (Release/block axis)
Note
If the axis is switched off due to an error, it will be enabled again automati
cally after the error
has been eliminated and acknowledged. This requires that the Enable input parameter has
retained the value TRUE during this process.
Table 10- 55 MC_Power instruction
LAD / FBD
SCL
Description
"MC_Power_DB"(
Axis:=_multi_fb_in_,
Enable:=_bool_in_,
StartMode:=_int_in_,
StopMode:=_int_in_,
Status=>_bool_out_,
Busy=>_bool_out_,
Error=>_bool_out_,
ErrorID=>_word_out_,
ErrorIn-
fo=>_word_out_);
The MC_Power motion control instruction enables
or disables an axis. Before you can enable or disa-
ble the axis, ensure the following conditions:
• The technology object has been configured
correctly.
• There is no pending enable-inhibiting error.
The execution of MC_Power cannot be aborted by
a motion control task. Disabling the axis (input
parameter Enable = FALSE) aborts all motion con-
trol tasks for the associated technology object.
1
STEP 7 automatically creates the DB when you insert the instruction.
2
In the SCL example, "MC_Power_DB" is the name of the instance DB.