Siemens SIMATIC S7-1500 Motion Control V13 - MC_Home

Instructions
11.1 S7-1500 Motion Control V2
S7-1500 Motion Control V13 Update 3
Function Manual, 07/2014, A5E03879256-AC
239
11.1.2
MC_Home
11.1.2.1
MC_Home: Home technology objects, set home position V2
Description
With the Motion Control instruction "MC_Home", you create the relationship between the
position in the technology object and the mechanical position. The position value in the
technology object is assigned to a homing mark at the same time. This homing mark
represents a known mechanical position.
The homing process occurs according to the mode selected with the "Mode" parameter, and
the configuration under "Technology object > Configuration > Extended parameters >
Homing".
The "MC_Home.Mode" parameter for S7-1200 Motion Control and S7-1500 Motion Control
has been standardized within the framework of technology version V2.0. This results in a
new assignment of the parameter values for the "MC_Home.Mode" parameter. A
comparison of the "MC_Home.Mode" parameter for technology versions V1.0 and V2.0 is
available in the section Version overview (Page 86).
The preset values under "Technology object > Configuration > Extended parameters >
Dynamic default values" are used for the dynamic values Acceleration, Deceleration and
Jerk.
Applies to
● Synchronous axis
● Positioning axis
● External encoder
The following table shows which modes are possible with each of the technology objects:
Operating mode
Positioning axis/
synchronous axis
with incremental
encoder
Positioning axis/
synchronous axis
with absolute
encoder
External
incremental
encoder
External absolute
encoder
Active homing
("Mode" = 3, 5)
X - - -
Passive homing
("Mode" = 2, 8, 10)
X - X -
Set actual position
("Mode" = 0)
X X X X
Relative shift of the actual position
("Mode" = 1)
X X X X
Homing absolute encoder
("Mode" = 6, 7)
- X - X