Scanlab RTC6 PCIe Board - Page 506

RTC6 boards
Doc. Rev. 1.0.21 en-US
10 RTC6 Commands
506
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Comments
(cont’d)
• load_list ( ListNo = 3) is useful in scenarios such as alternating list changes, where you
want to wait specifically for a list to be processed (see Section ”Alternating List
Changes”, page 111) without needing to separately query the list status. Unintentional
overwriting of not-yet-executed commands is thereby automatically avoided. To
instead perform unconditional loading, you can use commands such as
set_start_list_pos.
• After a successful check of the list number (BUSY list status not set and, if applicable,
USED list status set), load_list behaves like set_start_list_pos (see comments there).
• If ListNo = 0…2 when using load_list, then note that the BUSY list status of a list can
change between opening of the list with load_list and the actual loading of
list commands, for example, if in the meantime an automatic list change has occurred
that has been previously defined by auto_change or start_loop. In cases such as this,
where loading of a list might occur simultaneously with processing of the same list,
users must always ensure that the output pointer does not overtake the input pointer.
• In contrast, for ListNo = 3 load_list ensures that a list is actually opened for loading
only directly after processing (and after any successful automatic list changes).
Particularly, if for no list the BUSY list status is set but for both the USED list status
(for example, after initialization, after stop_execution or after an External Stop), the
opened list number is synchronized with the following automatic list change.
RTC4RTC6 New command.
RTC5RTC6 Unchanged functionality.
Version info Available as of DLL 600, OUT 600, RBF 600.
References set_start_list_pos
Ctrl Command load_list