| 摘要 |
PURPOSE:To enable the communication between slave stations, by providing an address exchange controlling means and an address setting means to a control station and then exchanging and writing an address through the control station. CONSTITUTION:When the communication is performed to a slave station P from a slave station Q, the station P is written along with the communication data to a certain part of an information field where the station Q performs writing. This frame is sent to a control station 10. The station 10 stores that an ascending telegram is given from the station Q from its address field and at the same time discriminates that the correspondence is addressed to the station P from the fact that the address information P is written in the information field. In response to this, the G written to the address field is exchanged with the P written in the information field through the station 10. Then a descending telegram is produced and transmitted to the station P. Thus the station P decodes the telegram and can read the telegram given from the station Q. |
