Configuring   
6.1 Adding and configuring drives in the device configuration 
  S7-1500 Motion Control V13 Update 3 
98  Function Manual, 07/2014, A5E03879256-AC 
Checking the encoder connection / drive connection 
The encoder data are applied to the position control cycle clock. If in doubt, check the 
following settings: 
1.  Switch to the device view of the PLC. 
2.  Select the module technology. 
3.  Open the properties dialog "Basic Parameters > I/O Addresses". 
4.  The following settings apply for the input and output addresses: 
–  "MC Servo" must be select the "Organization block". 
–  "PIP OB Servo" must be select the "Process image". 
5.  Select the analog module. 
6.  Open the properties dialog "Name of the Analog Module > I/O Addresses". 
7.  The settings from Step 4 apply for the input and output addresses 
Add technology object (Page 99)