
B-64164EN/01 SPECIFICATION 2.CYCLIC TRANSMISSION
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PMC area and common memory area 2
PMC D area
7 0
Dxxxx+0 Node number
Dxxxx+2 DI offset
Dxxxx+4 Data size
Dxxxx+6 O offset
PMC E/R area
Switch flag
Common memory
area 2
15 0
PMC area Transmit data
from other nodes
Transmit data of
DO the local node
Transmit data
from other nodes
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 (allocation size (for DO)),
DO data exchanged from the PMC area to
common memory area 2 is not performed.
- When the PMC area for Pa43 (allocation
condition setting (for DI/DO)) is not set, the DO
offset is assumed to be 0.
- When the PMC area for Pa44 (condition switch
flag (for DI/DO)) is not set, it is impossible to
change the DO offset dynamically.
- When (DO offset + Pa41) > Pa14, DO data
exchange is not performed.
Pa43→
Pa44→
Pa40→
Pa41
Pa14
Pa13→