Position Measuring System With Distance-Coded Reference Marks (From Sw 4.1) - Siemens SIMODRIVE 611 universal Function Manual

6 Description of the Functions
6.1 Operating mode, speed/torque setpoint (P0700 = 1)
6.1.9 Position measuring system with distance–coded reference marks
(from SW 4.1)
General
information
Proceed as follows
6-352
In order that large distances do not have to be traversed for reference
point approach, for indirect and direct measuring systems, it is possible
to use a position measuring system with distance–coded reference
marks.
This guarantees that the measuring system has already been refer-
enced after a short traversing distance (e.g. 20 mm).
Note
Referencing with distance–coded reference marks is only possible
using PROFIBUS–DP in an external control (refer to Chapter 5.6.4). It
is not possible to evaluate the coding in the board itself!
From SW 8.3 for rotary encoder systems:
The SIMODRIVE module is, in the pos mode, in the position to
autonomously reference (home) without an external control.
The procedure is the same as when referencing with normal incremen-
tal measuring systems.
The following conditions should be observed:
S
Indirect measuring system (motor measuring system, IM)
– P1027.7 = 1 (IM configuration, encoder)
––> distance–coded reference scale
– P1050 or P1051
––> basic distance between two fixed reference marks
S
Direct measuring system (DM)
– P1037.7 = 1 (DM configuration, encoder)
––> distance–coded reference scale
– P1052 or P1053
––> distance–coded reference scale
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
E Siemens AG 2005 All Rights Reserved
04.05 01.99