Siemens SINUMERIK 828D Function Manual page 620

K1: Mode group, channel, program operation, reset response
9.13 Program control
Additional boundary conditions for the basic block display:
• Modal synchronized action blocks with absolute values are
not taken into account.
• The basic block display is deactivated during block search with or without computation.
• Polar coordinate programming is not shown in Cartesian system.
Radius / diameter values
Diameter values shown in the basic block display and position display may be needed as a radius for internal
calculation. These values for measurements in radius/diameter according to G code group 29 can be
manipulated using the following options:
• G code DIAMCYCOF (expansion of channel-specific diameter programming)
This G code deactivates the channel-specific diameter programming during the cycle execution. In this way,
computations in the cycle can always be done in the radius. The position display and the basic block display
are continued according to the state of the diameter programming before DIAMCYCOF.
In the basic block display, the last displayed value is retained.
• G code DIACYCOFA[AX] (axis-specific diameter programming)
This G code deactivates the axis-specific diameter programming during the cycle execution. In this way,
computations in the cycle can always be done in the radius. In the position display and in the basic block
display, this continues according to the state of the diameter programming before DIACYCOFA[AX].
In the basic block display, the last displayed value is retained.
• MD27100 $MC_ABSBLOCK_FUNCTION_MASK
Bit0 = 1 Transverse axis setpoints are always shown as diameter values in the
basic block display.
Behavior while the compressor is active
With active compressor and G/Code group 30 not equal to COMPOF, two display blocks are generated. The
• first contains the G/Code of the active compressor.
• The second contains the string "..." as character for missing display blocks.
Example:
G0 X10 Y10 Z10
COMPCAD
...
To avoid bottlenecks in the NCK performance, the basic block display is deactivated automatically. As a sign that
the display blocks are missing, a display block with the string "..." is generated.
All display blocks are always generated in the single block.
620
; Block to be preprocessed for the basic block display
; Compressor for optimized surface quality (CAD prog.) A
; string as character for missing display blocks
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions