Mc_Moveabsolute (Position Axis Absolutely) Instruction - Siemens S7-1200 System Manual
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Technology instructions
9.3 Motion control
Override response
The MC_Halt task can be aborted by the
following motion control tasks:
• MC_Home Mode = 3
• MC_Halt
• MC_MoveAbsolute
• MC_MoveRelative
• MC_MoveVelocity
• MC_MoveJog
9.3.5.6
MC_MoveAbsolute (Position axis absolutely) instruction
Table 9- 37
MC_MoveAbsolute instruction
LAD / FBD
STEP 7 automatically creates the DB when you insert the instruction.
1
In the SCL example, "MC_MoveAbsolute_DB" is the name of the instance DB.
2
Table 9- 38
Parameters for the MC_MoveAbsolute instruction
Parameter and type
Axis
Execute
Position
Velocity
Done
Busy
464
SCL
"MC_MoveAbsolute_DB"(
Axis:=_multi_fb_in_,
Execute:=_bool_in_,
Position:=_real_in_,
Velocity:=_real_in_,
Done=>_bool_out_,
Busy=>_bool_out_,
CommandAborted=>_bool_out_,
Error=>_bool_out_,
ErrorID=>_word_out_,
ErrorInfo=>_word_out_);
Data type
IN
TO_Axis_1
IN
Bool
IN
Real
IN
Real
OUT
Bool
OUT
Bool
The new MC_Halt task aborts the following
active motion control tasks:
• MC_Home Mode = 3
• MC_Halt
• MC_MoveAbsolute
• MC_MoveRelative
• MC_MoveVelocity
• MC_MoveJog
Description
Axis technology object
Start of the task with a positive edge (Default value: False)
Absolute target position (Default value: 0.0)
Limit values: -1.0e
≤ Position ≤ 1.0e
12
Velocity of axis (Default value: 10.0)
This velocity is not always reached because of the configured
acceleration and deceleration and the target position to be
approached.
Limit values: Start/stop velocity ≤ Velocity ≤ maximum velocity
TRUE = Absolute target position reached
TRUE = The task is being executed.
Description
Use the MC_MoveAbsolute
instruction to start a positioning
motion of the axis to an absolute
position.
In order to use the
MC_MoveAbsolute instruction, the
axis must first be enabled and also
must be homed.
12
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
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