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

Page 162

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background image

5–46

Block Transfer Services

1336 FORCE — 5.9 August 1995

Example

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

Dec

(3

Hex

), block ID number 4

Dec

(4

Hex

).

In Example 1, the PLC request indicates that the linked source is
parameter 146

Dec

(92

Hex

), the Motor Overload Limit parameter.

In Example 2, the PLC request indicates that the linked source is a
function block node: node number 2

Dec

(2

Hex

), block ID number 9

Dec

(9

Hex

).

1

0

2

3

4

5

6

7

8

9

N10:10

BTW
Data File

Data Format

8304

92

0

8F04

Example 1

N10:10

BTW
Data File

8304

8209

0

8F04

Example 2

N10:90

BTR
Data File

8304

0

0F04

The second example can be visually represented as the following:

node 0

ID = 9

node 1

node 2

(8209)

node 0

ID = 4

node 1

node 2

node 3

ID = x

(8304)

Write Node Link

(continued)

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