Program Display Modes Via An Additional Basic Block Display; Basic Block Display For Shopmill/Shopturn - Siemens SINUMERIK 840D sl Function Manual

K1: Mode group, channel, program operation, reset response
9.14 Program control
9.14.4

Program display modes via an additional basic block display

Basic block display (only for ShopMill/ShopTurn)
A second so-called basic block display can be used with the existing block display to show all
blocks that produce an action on the machine.
LookAhead basic block display
The actually approached end positions are shown as an absolute position. The position values
refer either to the workpiece coordinate system (WCS) or the settable zero system (SZS).
The number of LookAhead display blocks stored in the display buffer depends on the number
of prepared blocks in the NCK preprocessing buffer in the relevant processing state. If a
preprocessing stop is processed, the number of display blocks is reduced to zero and increases
again after the stop is acknowledged. In the case of REORG events (e.g. mode change, ASUB
start), the display blocks stored for LookAhead are deleted and preprocessed again afterwards.
Processed values
Values processed in the basic block display coincide with the:
● Selected tools
● Feedrate and spindle speed
● Actually approached position values
Exceptions:
With active tool radius compensation, deviations can occur.
For modulo axes, the programmed value is displayed in the basic block display. This value
can also lie outside the modulo range.
Note
Generally the positions are represented in the WCS or the SZS.
The basic block display can be activated or deactivated with setting data
SD42750 $SC_ABSBLOCK_ENABLE.
9.14.5

Basic block display for ShopMill/ShopTurn

Configure basic block display
The basic block display can be configured via the following machine data:
NCK machine data for basic block display
MD28400 $MC_MM_ABSBLOCK
MD28402 $MC_MM_ABSBLOCK_BUF‐
FER_CONF[2]
Display machine data
592
Significance:
Activate basic block display
Size of display buffer
Position values to be set:
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions