| 摘要 |
PURPOSE:To detect easily an address setting error by constituting the titled equipment so that a slave station adds a random data to a response data respond-to a polling from a control station, together with an address of its own station, and sends it out. CONSTITUTION:A control signal 1 executes a polling to each slave station 2-1- 2-n successively or in accordance with a desire, and sends and receives a data to and from the slave station. The slave station adds a random data generated by a random data generating part 25, to a response data responding to a polling from the control station 1, together with an own station address set optionally by an address setting part 21, and sends it out. Even if the address and information, etc. in each transmitting data sent out simultaneously from plural slave stations are the same, at least the random data is different, therefore, it is detected quickly that a data error has been generated and the address has been set repeatedly, and an abnormality in case of transferring a data can be detected easily. |
