Axis States - Siemens SINUMERIK 840D sl Function Manual

Basics on the Safety Functions Integrated in the System/Drive
5.4 Actual value conditioning
Calibrating the machine
The machine zero and encoder zero are calibrated purely on the basis of the offset
value (the machine must be calibrated). This procedure must be carried out for
both absolute and incremental encoders.
Encoder
zero
Fig. 5-4
When calibrating the machine, a known or measured position is approached using
a dial gauge, fixed stop, etc. and the offset determined. This offset is then entered
into the appropriate machine data. Calibration must always be carried out for posi-
tion–controlled (closed–loop) axes/spindles.
References:
5.4.3

Axis states

"Axis not referenced" state
The axis state "axis not referenced" is reached after the power supply has been
powered–up and the drive and control system have completely booted. This state
is indicated using the axis–specific interface signal "reference point reached" as
follows:
Interface signal
"Reference point reached" = "1"
"Reference point reached" = "0"
for 840D sl
(refer to Fig. 5-5 "Axis states when referencing")
5-100
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
Absolute encoder actual value
Offset value
Actual position value
Machine
zero
Positions and actual values
/IAD/, Commissioning Manual SINUMERIK 840D sl
/FBD/, Description of Functions, SINUMERIK 840D sl,
R1, "Reference point approach"
DB31–61, DBX60.4/DBX60.5
Switch–on
position/stop
position
Axis state "Axis referenced"
Axis state "Axis not referenced"
© Siemens AG 2008 All Rights Reserved
05.08