Chapter 8: Cyclic Transfer

Chapter 8: Cyclic Transfer

To execute a cyclic transfer using the FL-net module (JW-20FL5/20FLT and JW-50FL) and FL-net board (Z-336J), the parameters in the common memory areas (area 1 and 2) must be set.

Common

memory

area

Token Data

 

 

 

Node

Own

 

 

Node

 

 

 

 

node

 

 

 

 

 

 

 

1

 

 

n

 

 

 

 

 

(node f)

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Node 1

Node 1

 

 

Node 1

 

 

 

 

 

 

 

 

2

 

 

 

 

 

Area 1

Node f

Node f

3

 

Node f

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Node n

Node n

4

 

Node n

 

 

 

 

Node 1

 

 

 

 

 

 

 

 

Node 1

 

 

Node 1

 

 

 

 

 

 

 

 

5

 

 

 

 

Area 2

Node f

Node f

 

Node f

8

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Node n

Node n

 

Node n

 

 

 

 

 

 

 

 

 

Capacity

 

 

 

 

 

f = 1 to n (n:1 to 249)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Common

 

Area 1

8K bits (8192 bits = 1024 bytes)

 

8.5K words

 

 

 

 

memory area

 

 

 

 

 

 

 

 

 

 

Area 2

8K words (8192 words = 16384 bytes)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-Nodes used to execute a cyclic transfer must have 8.5 K words of memory available for the common memory area.

-Areas that can be allocated as the common memory area Page 8-4 to 8-6.

-Notes on the common memory areas Next page.

Parameter items to set

 

Set item

Reference number

Parameter

 

of the figure above

address(8)

 

 

 

Top address and file number on a PC

1

20 to 22

 

 

 

 

Area 1

Top address of sending area (this node)

2

10 to 11

 

 

 

 

 

Sending data length (this node)

3

12 to 13

 

 

 

 

 

Top address and file number on a PC

4

24 to 26

Area 2

 

 

 

Top address of sending area (this node)

5

14 to 15

 

 

 

 

 

Sending data length (this node)

6

16 to 17

 

 

 

 

-Set the parameters for use by the module in controlling any module (CPU board) installed in this module. See "Chapter 12: Parameters."

8-1