Panasonic FP0R - Avoid Overlapping Send Areas; Example of Link Relay Allocations; Invalid Allocations

7-42
Note: Precautions When Allocating Link Areas
If a mistake is made when allocating a link area, be aware that an error will result, and communication
will be disabled.
Avoid overlapping send areas
When sending data from a send area to the receive area of another PLC, there must be a link relay and
link register with the same number in the receive area on the receiving side. In the example shown below,
there is an area between No.2 and No.3 which is overlapped, and this will cause an error, so that
communication cannot be carried out.
Example of link relay allocations
System registers
No. Name
Set value of various control units
No. 1
No. 2
No. 3
No.40
Range of link relays used
64
64
64
No.42 Starting No. of word for link relay transmission 0 20 30
No.43
Link relay transmission size
20
20
34
Invalid allocations
The allocations shown below are not possible, neither for link relays nor for link registers:
- Send area is split
- Send and receive areas are split into multiple segments