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Omron CQM1H-CLK21 User Manual

Page 157

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134

Setting Data Links

Section 5-2

1:N Allocation, Common Type

Features of Common Type 1:N Allocation

• Data communications are 1:1 between the master node and slave nodes.

• All slave nodes receive the data sent by the master node.

• The master node receives all data sent by the slaves. The reception size

for the master node is thus the node send data size times the number of
slave nodes.

• Slaves do not send or receive data with other slaves.

• Area 1 is selected from the bit-access areas (e.g., CIO Area) and area 2

is selected from 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 allocations is specified.

1

4

1

2

2

3

1

1

3

4

1

4

1

2

2

3

1

1

3

4

(7) Participating nodes

Master node

Slave nodes

Area 1
(1) Area and start word

(2) Size for master
node

(3) Size for slave node

(Same as (3))

(Same as (3))

Area 2
(4) Type and start word

(5) Size for master
node

(6) Size for slave
node

(Same as (6))

(Same as (6))

Word N

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

---

---

0

0

---

0

0

0

---

1

0

1

0

0

0

---

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