Chapter 15: Appendix
(3)Token and data
There are six data patterns that can be attached to and sent with a token, as follows.
Token and data
No. | Item | Details |
| No data to attach | Only sends the token |
1 |
|
|
Token |
| |
|
| |
| Cyclic data only | Only attaches cyclic data to the token |
2 | Token + Cyclic data |
|
|
|
Cyclic data sent in frames.
3
Sends only cyclic data. The token is attached to the last frame.
Token + Cyclic data | Cyclic data | ||
Message data only | After sending the message data, passes the token along. | ||
4 | Message data |
| |
Token |
| ||
Cyclic data and message data | After sending the message data, sends the cyclic | ||
data together with the token. | |||
|
| ||
5 |
|
| |
Token + Cyclic data | Message data | ||
Cyclic data sent in frames and message data.
6
Token + Cyclic data
After sending the message data, the cyclic data is sent by itself. Then the token is sent by attaching it to the last frame.
Cyclic data | Message data |
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