Siemens SINUMERIK 840D Programming Manual page 99

2
03.96
09.01
Sequence of operations
Position reached prior to cycle start:
The drilling position is the position in the two axes of
the selected plane.
The cycle implements the following motion
sequence:
• Approach of the reference plane brought forward
by the safety distance with G0
• Traverse to final drilling depth with G1 and the
feedrate programmed before the program call
• Spindle stop with M5
• Press NC START key
• Retraction to retraction plane with G0.
Description of parameters
See Subsection 2.1.2. (Drilling, Centering –
CYCLE81) for a description of parameters RTP,
RFP, SDIS, DP, DPR
SDIR (direction of rotation)
With this parameter you determine the direction of
rotation with which boring is performed in the cycle.
If values other than 3 or 4 (M3/M4) are generated,
alarm 61102 "No spindle direction programmed" is
output and the cycle is aborted.
© Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
Drilling Cycles and Drilling Patterns
2.1 Drilling cycles
Z
Z
X
2
X
G0
G1
M5/M0
RTP
RFP+SDIS
RFP
DP=RFP-DPR
2-99