Plc Link; Example Of Link Area Allocation - Panasonic FP7 User Manual

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4.4 PLC Link

4.4.1 Example of Link Area Allocation

Link relays and link registers used for the PLC link are allocated to the configuration of the
FP7 MW Unit.
 Link Area Allocation: Example 1
• The PLC link area is divided into the send area and receive area for each unit and used.
• The link relays and link registers are sent from the send area to the receive area of a
different PLC.
Item
Range of link relays used
Range of link registers used
Link relay transmission start number
Link relay transmission size
Link register transmission start number
Link register transmission size
- Link relay allocation
WL0
Send area
19
20
Receive area
63
No. 1
- Link register allocation
LD0
Send area
39
40
Receive area
127
No. 1
• When link areas are allocated as shown above, the send area no. 1 is sent to the receive
areas nos.2, 3 and 4. Also, the receive area no. 1 receives data from the send areas nos. 2
and 3.
• No.4 is allocated as a receive area only, and receives data from nos. 1, 2 and 3.
4-12
WL0
No.1
Receive area
19
20
No.2
Send area
39
40
No.3
Receive area
63
No. 2
LD0
No.1
Receive area
39
40
No.2
Send area
79
80
No.3
Receive area
127
No. 2
Each unit setting
64 64 64
128 128 128
0 20 40
20 20 24
0 40 80
40 40 48
WL0
No.1
Receive area
No.2
39
40
No.3
Send area
63
No. 3
LD0
No.1
Receive area
No.2
79
80
No.3
Send area
127
No. 3
64
128
0
0
0
0
WL0
No.1
No.2
Receive area
No.3
63
No. 4
LD0
No.1
No.2
Receive area
No.3
127
No. 4