Supported Data Communications; Figure 5-5 Data Communication Types Supported By Fl-Net; Figure 5-6 Typical Common Memory And Cyclic Transmission - Hitachi FL.NET User Manual

5.1.3 Supported data communications

Data communications supported by the FL-net are cyclic transmission and message transmission.
Cyclic transmission

Figure 5-5 Data Communication Types Supported by FL-net

(1) Cyclic transmission
Cyclic transmission provides periodic transmission of data. All nodes can share data via the
common memory (shared memory).
T o k e
T o k e
Node
1
Node 1
Node 2
Node 3
Node 4
. . .
Node n

Figure 5-6 Typical Common Memory and Cyclic Transmission

Token-attached
cyclic data
n
n D a t a
D a t a
FL-net
Node
2
Node 1
Node 2
Node 3
Node 4
. . .
Node n
Cyclic transmission + message transmission
Node Node
3 . .
Node 1 Node 1
ノ ノ ー ー ド ド ３ ３ ... ...
Node 2 Node 2
Node 3 Node 3
Node 4 Node 4
. . . . . .
Node n Node n
5-5
5 USER GUIDE
Message
data
Node
n
Node 1
ノ ノ ー ー ド ド ｎ ｎ
Node 2
Node 3
Common
memory
Node 4
. . .
Node n