Read node link, Example – Rockwell Automation 1336T Function Block Prog. Manual, Series A/B User Manual

Page 160

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5–44

Block Transfer Services

1336 FORCE — 5.9 August 1995

Example

In both examples, the PLC has requested to read node number 3

Dec

(3

Hex

), block ID number 4

Dec

(4

Hex

).

In Example 1, the drive response indicates that the node is linked to
parameter 146

Dec

(92

Hex

), the Motor Overload Limit parameter.

1

0

N10:10

2

3

4

5

6

7

8

9

N10:90

BTW
Data File

BTR
Data File

Data Format

8304

8304

92

0

0

0F04

0F04

Example 1

This example can be visually shown as follows:

p.146

node 0

ID = 4

node 1

node 2

node 3

(8304)

Destination

Source

In Example 2, the drive response indicates that the node is linked to
another function block node: node number 2

Dec

(2

Hex

), block ID

number 9

Dec

(9

Hex

).

1

0

N10:10

2

3

4

5

6

7

8

9

BTW
Data File

Data Format

8304

0

0F04

N10:90

BTR
Data File

8304

8209

0

0F04

Example 2

The second example can be visually shown as follows:

node 0

ID = 9

node 1

node 2

(8209)

node 0

ID = 4

node 1

node 2

node 3

(8304)

Source

Destination

Read Node Link

(continued)

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