What Klartext looks like
0 BEGIN PGM BRACKET MM
1 BLK FORM 0.1 Z X+0 Y+0 Z-20
2 BLK FORM 0.2 X+100 Y+80 Z+0
3 TOOL CALL 5 Z S8000 F2000
4 L Z+100 R0 FMAX M3
5 L X-10 Y+10 R0 FMAX M8
6 L Z-2 R0 F500
7 L X+110 R0 F2000
8 CC X+110 Y+30
9 C X+110 Y+50 DR+
10 L Z+100 R0 FMAX
11 M30
12 END PGM BRACKET MMLinear moves use L, arcs use a circle centre CC and C with direction DR+/DR-, and R0/RL/RR control radius compensation.
Heidenhain features used by posts
| Feature | Syntax |
|---|---|
| Tool call | TOOL CALL 5 Z S8000 |
| Drilling cycles | CYCL DEF 200 DRILLING with Q parameters, CYCL CALL or M99 |
| Tolerance / smoothing | CYCL DEF 32 TOLERANCE |
| Tilted working plane | PLANE SPATIAL, PLANE VECTOR, PLANE RESET |
| Tool centre point | M128 or FUNCTION TCPM |
| Subprograms | LBL 1 ... LBL 0, CALL LBL 1 |
Example: drilling cycle
CYCL DEF 200 DRILLING ~
Q200=2 ;SET-UP CLEARANCE ~
Q201=-25 ;DEPTH ~
Q206=150 ;FEED RATE FOR PLNGNG ~
Q202=5 ;PLUNGING DEPTH ~
Q210=0 ;DWELL TIME AT TOP ~
Q203=+0 ;SURFACE COORDINATE ~
Q204=50 ;2ND SET-UP CLEARANCE ~
Q211=0 ;DWELL TIME AT DEPTH
L X+20 Y+20 R0 FMAX M99
L X+60 Y+20 R0 FMAX M99Klartext or ISO?
Many TNC controls can also run ISO (DIN/ISO) programs, but most Heidenhain users prefer Klartext because operators can read and edit it easily, and advanced functions are best supported there.
Versions matter
TNC 426/430, iTNC 530, TNC 620/640 and TNC7 differ in available functions and cycles. The post must match the control version and options on the machine.
A Heidenhain post should produce Klartext that looks like a skilled operator wrote it.
Heidenhain post development
See our CNC post processor development service and SolidCAM 5-axis output for Heidenhain.