Controller Link Units Operation Manual
142
Setting Data Links Section 5-2
• Each slave nodes receives data from the previous node and then sends
data to the next node. Data is thus passed in ascending order of the
nodes participating in the data link.
• One area is selected from the bit-access areas (e.g., CIO Area) or word-
access areas (e.g., DM Area).
• Data link areas are allocated in ascending order of node addresses.
• Data link participation can be specified for each node.
Address N: D30000 + (100
× Controller Link Unit number)
When bits 6, 5 and 4 are set to 1, 0 and 1 respectively, automatic setting with
1:N allocation is specified.
Words N+22 through N+25 register nodes that will participate in the data
links. The numbers in the table are the node addresses. The bit status given
for each node address indicates whether the node is to participate in the data
links.
Participate: ON
Not participate: OFF
Note 1. Set 0 as the values of the reserved areas (N+17 to N+20).
2. When using automatic data link creation with 1:N allocation, set DM Pa-
rameter Areas N+2 to N+11 (which were previously used for automatic set-
ting with equality layout) to 0.
Setting Range for
Automatic Creation with
1:N Allocation, Chain Type
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
--- ---
00
---
000
---
1 0 1000
---
Word N
15 8 7 0
N+12
---
N+13
N+14
(1)
N+15
(2)
N+16
(3)
N+17
---
N+18
---
N+19
---
N+20
---
N+21
---
N+22 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2
1
N+23323130292827262524232221201918
17
N+24484746454443424140393837363534
33
N+25
--- ---
62 61 60 59 58 57 56 55 54 53 52 51 50 49
(4)
1:N allocation type setting (
Set value 0003=Delivery type
)
Rightmost 4 digits of area start word (BCD)
Area
Number of master common send words (BCD)
Number of receive and send words per node (BCD)
0000 (Reserved area)
0000 (Reserved area)
0000 (Reserved area)
0000 (Reserved area)
First word to store data link status (bit-access area) (BCD)
Leftmost digit of area start word (BCD)
Item Setting range
Data link mode Specify automatic data link creation with 1:N allocations.
1:N allocation Specify Chain Type.