Detailed description
2.9 Program control
Basic logic functions: Mode group, channel, program operation, reset response (K1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
151
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
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 ...
............
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