Partial Use Of Link Areas - Panasonic FP0R User Manual

Communication
System register settings

6.7.2.3 Partial use of link areas

Link flag allocation
148
Name Name
1)
51 Link registers - Send/receive area - Number of words
shared by all linked PLCs
54 Link registers - Send area - Start sending from this
word address
55 Link registers - Send area - Number of words to send
1)
The value of this system register must be identical for all stations.
When link areas are allocated as shown above, the send area of station no.
1 can be transmitted to the receive areas of stations no. 2, 3, and 4. Also,
the receive area of station no. 1 can receive data from the send areas of
stations no. 2 and 3. Station no. 4 is allocated as a receive area only and
can receive data from stations no. 1, 2, and 3, but cannot send data to
other stations.
In the link areas available for PLC link, link flags with a total of 1024 points
(64 words) and link registers with a total of 128 words can be used. This
does not mean, however, that it is necessary to reserve the entire area.
Parts of the area which have not been reserved can be used as internal
flags and internal registers.
Send area
Receive area
Area for internal flags
Used for link flags
Q
Not used for link flags
W
Station settings
#1 #2 #3 #4
128 128 128 128
128 168 208 128
40 40 48 0
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