Siemens S7-1200 System Manual page 489
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Also See for S7-1200:
- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages) ,
- Manual (46 pages)
Table of Contents
Parameter
Reference point switch
(Active and passive homing)
Approach velocity
(Active homing only)
Reduced velocity
(Active homing only)
Home position offset
(Active homing only)
Table 9- 59
Factors that affect homing
Configuration
Approach direction
Positive
Positive
Negative
Negative
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
Description
Active homing: Select whether the axis is to be referenced on the left or right side
•
of the reference point switch. Depending on the start position of the axis and the
configuration of the homing parameters, the reference point approach sequence
can differ from the diagram in the configuration window.
Passive homing: With passive homing, the traversing motions for purposes of
•
homing must be implemented by the user via motion commands. The side of the
reference point switch on which homing occurs depends on the following factors:
–
"Approach direction" configuration
–
"Reference point switch" configuration
–
Current travel direction during passive homing
Specify the velocity at which the reference point switch is to be searched for during
the reference point approach.
Limit values (independent of the selected user unit):
Start/stop velocity ≤ approach velocity ≤ maximum velocity
Specify the velocity at which the axis approaches the reference point switch for
homing.
Limit values (independent of the selected user unit):
Start/stop velocity ≤ reduced velocity ≤ maximum velocity
If the desired reference position deviates from the position of the reference point
switch, the home position offset can be specified in this field.
If the value does not equal 0, the axis executes the following actions following
homing at the reference point switch:
1. Move the axis at reduced velocity by the value of the home position offset.
2. When the position of the home position offset is reached, the axis position is set
to the absolute reference position. The absolute reference position is specified via
parameter "Position" of motion control instruction "MC_Home".
Limit values (independent of the selected user unit):
-1.0e12 ≤ home position offset ≤ 1.0e12
Influencing factors:
Configuration
Reference point switch
"Left (negative) side"
"Right (positive) side"
"Left (negative) side"
"Right (positive) side"
Current travel direction
Positive direction
Negative direction
Positive direction
Negative direction
Positive direction
Negative direction
Positive direction
Negative direction
Technology instructions
9.3 Motion control
Result:
Homing on
Reference point switch
Left
Right
Right
Left
Right
Left
Left
Right
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