Figure 8-18 Token Flow - Hitachi S10mini User Manual

(2) Flow of token
Basically, only one token exists within the network.
If two or more tokens should exist within the network, the one having the lowest destination
node number takes precedence with the others discarded.
A frame having a token (token frame) has a token's destination node number and a token
transmission node number.
When a node matches the token's destination node number contained in the received token
frame, it becomes a token holder.
The order of token rotation is determined by node numbers.
Token rotation for nodes occurs in the ascending order of node registrations in the entering
node management table.
A node having the highest node number passes the token to a node having the lowest node
number.
Node 2
Node 1
Passing the token to the next node
Node 3
Passing the token a node having
the lowest node number

Figure 8-18 Token Flow

8-23
8 APPENDIXES
Node N-1
Node N