Abstract:
PURPOSE:To improve the operating ratio and the reliability of the system, by instructing a station to be monitored to fold the transmission network by a monitor station when a fault occurs. CONSTITUTION:When a fault occurs, a monitor station 2 instructs all stations A-D to be monitored to fold dual transmission networks in every station. This instruction is executed first in the nearest station A, and the station A transmits its own station address to the monitor station 2. The monitor station 2 stores the address of the station A and releases folding of the station A. Though the monitor station 2 expects that a station B will tramsmit the address, the station B cannot transmit the address to the monitor station 2 because of the fault between stations A and B. The monitor station 2 detects that the address is not transmitted from the station B, and the monitor station 2 discriminates the occurrence of a fault between stations A and B and instructs the station A to fold the transmission network. Simultaneously, the similar processing is performed for stations D and C to ensure the line.
Abstract:
PURPOSE:To increase the number of degrees of freedom for system change, by retrieving automatically physical positions of station to be monitored by a monitor station to generate a correspondence table with station addresses in case of the system change to increase the number of sations to be monitored. CONSTITUTION:When a monitor station SV issues a G.NRQ instruction, this instruction is executed in a station A to be monitored nearest to the station SV because this instruction is effective for all stations to be monitored, and an station addess (a) of the station A is written in a station address part 7. Next, a station B to be monitored receives a monitoring subframe transmitted from the station A and executes the G.NRQ instruction, and an address (b) of its own station is written in the station address part 7. An address (c) of a station C to be monitored is written in he address part 7 similarly in respect to the station C, and the monitoring subframe is returned to the station SV, and an A.WON instruction is issued from the statin SV to the station C, and the acceptance of succeeding G.NRQ instruction is inhibited in the station C. Thus, the station SV generates a correspondence table with station addresses.
Abstract:
PURPOSE:To prevent the pick up of the switch address in erroneous form, by picking up the switch address information, through the countermeasures against chattering and bouncing of switches and mistouching and double touch. CONSTITUTION:The address information turned on or off is picked up by scanning the matrix switch 1 placed in matrix shape. In this case, the repetitive scanning circuit repetitively scanning the matrix switch 1 is provided and also, the address information pick up 6 set according to turning on or off of the switch detected at first during one scanning is provided with at least multi-pressing down FF. Further, on the condition that the synchronism taking the switch depression FF only at set state is continued for the number of times predetermined, the address information of the switch in ON or OFF state is picked up. Thus, the countermeasures against chaterring of switches etc. can prevent the switch address information in erroneous form from being picked up.
Abstract:
PURPOSE:To secure the proper decision for the next communication computer by designating the computer determined by the input/output device based on the program as the next communication computer and putting other computer which had the start request under the holding state at the time of discontinuation. CONSTITUTION:Computers CPU1-CPUn are connected to one unit of input/output device IO. In case device IO is not under the communication state with any computer, the computer which had first the start request is connected to IO to perform the communication. And if the start request is given from other computer under communication, the busy state is informed to all computers which had the start request with the start request memorized simultaneously. When the communication is over through reading, the end of communication is informed to one unit of the computer among the computers which had the start request and selected by IO based on the program. And the selected computer is made to transmit the start request again.
Abstract:
PURPOSE:To lower the memory occupying rate due to refreshing, by excuting the access request to the refresh unnecessary area as it is, during refresh or at the tim point of refresh initiation.
Abstract:
PURPOSE:To be able prepare necessary micro commands for the purpose of the next performance time until micro command performance time completion of one by micro program treatment system.