| 摘要 |
<p>PURPOSE:To alloy any data processor or to offer the change of communication conditions by sending a communication condition change telegraphic message when a telegraphic message of approval of communication condition change from all other data processing units to allow each data processor to perform communication without crosstalk. CONSTITUTION:A telegraphic message such as data is sent in the order of, e.g., data processors A, B, C, D cyclicly under the same communication condition. When a data processor is going to change the communication condition, the telegraphic message offering the communication condition change including the content of the communication condition desired to be changed is sent to all stations. The other data processors read the content of the communication condition change of the communication condition change offering message and judges whether or not the change is enabled. When the change is made possible, an approval reply is sent and when disabled, a rejection message is sent. When a data processor sending the communication condition change offering message receives the approval message from all other data processors, the processors sends the communication condition change message storing the content of the same change to all stations.</p> |
