| 摘要 |
<p>PURPOSE:To attain versatile detour information transfer line constitution for a network by providing 4 directions of information transfer lines to the network allowing the network to supervise the response to information transfer and to change information transfer line in case of fault. CONSTITUTION:A control section 1 manages each interface and a memory. A timer section 3 sets a timer in transferring data to a direction of an interface and when no response exists from the interface even after a prescribed is elapsed at data transfer so as to use it an interruption input to be transferred to the interface having the 2nd priority and to use it as an interruption input for data retransmission request when no data is received even after a prescribed time is elapsed at data reception from the computer system. The network interface sections 5-8 are connected to each direction of the network to transmit/ receive the data between the network controllers.</p> |
