K1: Mode group, channel, program operation, reset response
9.13 Program control
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
617
Validity
SD42990 $SC_MAX_BLOCK_IN_IPOBUFFER has global, channel-specific validity and can also be modified in a
part program. This modified value is maintained at program end. If this setting data is to be reset again on
defined events, a so-called event-driven program must be created to do this. For example, this setting data could
always be set to a predefined value on RESET.
Application
The IPO buffer limitation can be used whenever the number of blocks between block preparation and
interpolation must be minimized, e.g., when actual positions in the part program must be read and processed for
other purposes.
Example
Note
If SD42990 $SC_MAX_BLOCKS_IN_IPOBUFFER is set in the part program, the
interpolation buffer limitation takes effect immediately if the block with the SD is being
preprocessed by the interpreter.
This means that the limitation of the IPO buffer may take effect a few blocks before the
intended limitation (see also MD 28070 $MC_MM_NUM_BLOCKS_IN_PREP).
To avoid premature activation and to make the limitation of the IPO buffer take effect in
synchronism with the block, a STOPRE (preprocessing stop) must be programmed before
the SD is set in the part program.
N10 ...
N20 ...
..........
N100 $SC_MAX_BLOCKS_IN_IPOBUFFER = 5
;
Limitation of IPO buffer to 5 NC
blocks
N110 ...
N120 ...
............
N200 $SC_MAX_BLOCKS_IN_IPOBUFFER = -1
;
Cancellation of the IPO buffer
limitation
N210 ...
............
Содержание SINUMERIK 828D Turning
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Страница 146: ...A3 Axis Monitoring Protection Zones 2 6 Data lists Basic Functions 146 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 328: ...F1 Travel to fixed stop 6 5 Data lists Basic Functions 328 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 816: ...K2 Axis Types Coordinate Systems Frames 10 9 Data lists Basic Functions 816 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1198: ...P4 PLC for SINUMERIK 828D 14 6 Function interface Basic Functions 1198 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1752: ...Appendix 20 2 Overview Basic Functions 1752 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1774: ...Glossary Basic Functions 1774 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...