Chapter 7: Computer Link Function
(2)Message transfer
In the message transfer operation, the
Normally, when a request to send occurs, the
Transfer message from node 1 to 3 | Transfer message from node 6 to 4 |
1 | 2 | 3 | 4 | 5 | 6 |
Example of a message transfer
[4] Transfer data volume
(1) Cyclic transfer
7In a cyclic transfer, the
The maximum amount of data that can be transferred cyclically at one time by one node is 8.5 K words.
One word = 2 bytes.
215 | 20 |
Area 1 | 8 K bit |
Common memory area
Area 2 | 8 K word |
Cyclic transfer data limit