HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 161)

4-36
TNC 407/TNC 415/TNC 425 1 Machine axes 01.98
Note:
– The positions which are given are relative to the machine datum (MP960.x).
– Software limit switches are not considered.
– Tool compensations are not calculated.
– The path compensation must be terminated before a PLC positioning.
– PLC positioning is not displayed in the test graphics.
Example: PLC positioning of the Z-axis
A PLC positioning in the Z-axis is to be initiated with the M-function M70. The target position is
stored in the machine parameter MP4210.2. The feed for the PLC positioning is defined in machine
parameter MP4220.2
.
.
.
67 L M0
68 ON M0
69 S M2496 ;decoded M-code output (M1900 to M1999)
70 S M2719 ;Word processing (incompatible with TNC 155/355)
71 L M1970 ;M-function M70?
72 A M2045 ;change signal M-function?
73 AN M4 ;edge marker
74 CMT 110 ;load position and feed
75 S M2706 ;activate PLC positioning Z axis
76 S M4 ;edge marker
77 L M1970 ;M-function M70?
78 A M2045 ;change signal M-function?
79 AN M2706 ;PLC positioning Z axis done
80 S M2482 ;acknowledgement M-function done
81 LN M2045 ;no M-function?
82 R M2482 ;acknowledgement reset
83 R M4 ;edge marker reset
.
.
.
1210 EM ;main program end
1211 LBL 110 ;load Z position and feed rate
1212 L D776 ;load target position from MP4210.2
1213 = D536 ;target position PLC positioning Z axis
1214 L W964 ;load feed from MP4220.2
1215 = W564 ;feed PLC positioning Z axis
1216 EM