HEIDENHAIN TNC 335 Technical Manual - Manual (Page 275)

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TNC 360 12 Incremental Jog Positioning 8/95
12 Incremental Jog Positioning
The "incremental jog" function for the electronic handwheel operating mode can be activated through
the PLC program. This function permits the user to enter a jog increment (0.001 to 50 mm) by which
an axis moves whenever a machine axis direction button (e.g. X+) is pressed.
The incremental jog positioning function is activated through the PLC marker M2498. In the
electrical handwheel mode the dialogue "jog increment" is then displayed to prompt the user to enter
the jog increment.
Incremental jog positioning is normally executed through axis direction keys. In order to cause only a
single movement when the button is pressed, the PLC input signal for the axis direction button must
be evaluated for one edge (e.g. positive edge). See also Chapter "PLC programming", Section "Edge
evaluation of the PLC inputs".
This inhibits the function for manual traverse in the electronic handwheel mode when the axis
direction button is pressed for a long time. Each time the button is pressed, the axis moves only
once and only by the entered jog increment.
In the PLC program the start marker and the corresponding complement marker must be taken into
account. If this in not the case the error message "PLC ERROR xx" appears.
Marker Function and input Error
message Set Reset
M2052 Operating mode: Electronic handwheel
or Word W 272 NC NC
M2497 Activate the edge evaluation for PLC inputs PLC PLC
M2498 Release jog positioning PLC PLC
M2512
M2528 Start jog positioning X+
Complement jog positioning X+ 2A PLC PLC
M2513
M2529 Start jog positioning X
−
Complement jog positioning X
−
2B
M2514
M2530 Start jog positioning Y+
Complement jog positioning Y+ 2C
M2515
M2531 Start jog positioning Y
−
Complement jog positioning Y
−
2D
M2516
M2533 Start jog positioning Z+
Complement jog positioning Z+ 2E
M2517
M2534 Start jog positioning Z
−
Complement jog positioning Z
−
2F
M2518
M2535 Start jog positioning 4th axis +
Complement jog positioning 4th axis + 2G
M2519
M2536 Start jog positioning 4
−
Complement jog positioning 4
−
2H