
2.CYCLIC TRANSMISSION DESCRIPTION B-63434EN/02
- 16 -
4) Until FFh is written to the switch flag, the CNC writes the DO
data in the PMC area specified by Pa40 (allocation address (for
DO)) to common memory area 2, using the same DO offset.
2222<,
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2222<5
2222
NOTE
1 When the offset is dynamically changed for DO data
allocation of common memory area 2, the node
number, DI offset, and data size are also changed.
To change only the DO data offset, carefully change
the setting not to change other values.
2 There are the following restrictions on DO data
exchange:
- When 0 is set in Pa41 (data size), DO data exchange
is not performed.
- If a negative value is set in Pa43 (area 2 data
exchange condition allocation address), operation
assumes that the DO offset is 0.
- If a negative value is set in Pa44 (switch flag
allocation address), the DO offset cannot be
dynamically changed.
- When (DO offset + Pa41) > Pa14, DO data exchange
is not performed.