Example Of A Plc-Program For Spindle-Orientation With M19/M20 - HEIDENHAIN TNC 415 Technical Manual

Marker Function
M2007 Spindle in Position
M2127 Spindle in motion (controlled spindle)
M2408 Cycle 13 is being executed
M2499 Open the spindle control loop
M2501 Activates spindle-speed MP3520.0
and direction of rotation from Marker M2656
M2615 Re-evaluation of the reference marks
for spindle orientation
M2656 Spindle orientation from stop
0 = Orientation with M03
1 = Orientation with M04
M2712 Activate PLC positioning for
spindle orientation
D592 Nominal position for spindle orientation
(Strobe M2712)

Example of a PLC-program for spindle-orientation with M19/M20

Program description:
Using the M-Function M19 to activate a spindle-orientation to the value which is determined by the
spindle-orientation cycle.
Using the M-Function M20 to activate a spindle-orientation to the value which is stored in
MP4210.47.
;Main program
LN M1
S M1
. .
. .
. .
LN M2045
R M12
R M2482
Activation of the orientation to the value from the HEIDENHAIN cycle
L M1919
A M2045
AN M12
CMT 180
S M12
01.98 TNC 407/TNC 415/TNC 425
;Generate logic ONE
;Buffer marker which is continuously ONE
.
.
.
;M-strobe inactive
;Spindle-orientation cycle active
;Acknowledgement of M-code
;Decoded M-function 19
;M-code change signal
;Orientation-cycle active
;Activation of the Orientation from the cycle
;Orientation-cycle active
4 Main Spindle
Set Reset
NC NC
NC NC
NC PLC
PLC PLC
PLC PLC
PLC NC
PLC PLC
NC, PLC NC
4-109