Technical data

Basic functions
4.2 Homing
Connection of the SINAMICS S120 to the Technology CPU
120 Product Information, 09/2011, A5E00480378-04
Creating the S7 user program
Use the Technology Object Manager (TOM) to create a technology data block (TO-DB)
assigned to the homing output cam technology object. The technology data block (TO-DB)
allows the functions on the associated technology object to be executed using the provided
FBs. For the homing, use the FB403 MC_Home function block in your S7 program.
4.2.6 Absolute encoder adjustment with the control panel
Introduction
If, because of a defect, an absolute encoder calibration must be performed if an absolute
encoder must be replaced or the drive spindle without encoder has been twisted.
This can be performed using the "MC_Home" command from the S7 user program or
from the control panel.
The following section describes how an absolute encoder adjustment can be performed from
the S7T Config control panel.
Procedure
1. Click the "Control panel" button in the "\Technology\Axes\Axis_1\Control panel"
directory of the project navigator to open the control panel in S7T Config.
2. Enable the PA process image of the CPU315T-2 DP / CPU317T-2 DP.
For the example, select "Axis_1" and click the "Assume control priority" button
to pass the control priority to the control panel.
3. Enable the axis
and use "Position absolute/relative" to move it to the absolute
encoder position 0.0 mm.
4. Then click the
button to move the axis speed-controlled at slow speed until the zero
position of the system is reached exactly.
5. Click the "Home axis"
function in the control panel.