Siemens Sinumerik 801 - Reference Point Setup

Setting Up
SINUMERIK 801 5-5
Start-Up
4.3 Starting Up Reference Points
General Many functions of the SINUMERIK 801are built on reference points, e.g.,
AUTO and MDA modes can only be activated after the machine has
approached the reference points; the backlash compensation and leadscrew
error compensation can not be enabled until reference points have been
approached. Therefore, reference points shall first be approached prior to the
normal operation of the control system.
With Reference Cam
BERO pulse refers to proximity switch signals. The BERO pulse can be
1) before reference cam:
MD34050: REFP_SEARCH_MARKER_REVERS=0, search for BERO pulse
in a direction reversal to the reference cam.
Reference cam
R
V
Start
R
K
BERO—pulse
V
C
V
M
V
P
2) after reference cam:
MD34050: REFP_SEARCH_MARKER_REVERS=1, search for BERO pulse in
the same direction as the reference cam.
V
C
Reference cam
V
P
V
M
R
V
Start
R
K
BERO—pulse
Without reference cam
R
V
Start
R
K
BERO—
p
ulse
V
P
V
M