Drive And Encoder Connection; Brief Description - Siemens SIMATIC S7-1500 Function Manual

Basics

3.10 Drive and encoder connection

3.10 Drive and encoder connection
3.10.1

Brief description

A speed axis is assigned a drive.
A positioning axis/synchronous axis is assigned a drive and an encoder.
An external encoder is assigned an encoder.
The setpoint value at the drive is specified either with PROFIdrive message frames, or with
an analog output.
The following connection options are available for an encoder:
● Encoder to drive
● Encoder on technology module
● PROFIdrive encoder directly to PROFIBUS DP / PROFINET IO
The encoder value is transmitted exclusively via PROFIdrive message frames.
PROFIdrive
PROFIdrive is the standardized standard profile for drive technology in the connection of
drives and encoders via PROFIBUS DP and PROFINET IO.
Drives that support the PROFIdrive profile are connected according to the PROFIdrive
standard.
Communication between controller and drive/encoder is by means of various PROFIdrive
message frames. Each of the message frames has a standardized structure. Depending on
the application, you can select the applicable message frame. Control words and status
words as well as setpoints and actual values are transmitted in the PROFIdrive message
frames.
The PROFIdrive profile likewise supports the "Dynamic Servo Control" (DSC) control
concept. DSC uses rapid position control in the drive. This can be used to solve highly
dynamic positioning jobs.
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S7-1500 Motion Control V13 Update 3
Function Manual, 07/2014, A5E03879256-AC