Arrangement for fault diagnosis in the communication controller

Details Arrangement for fault diagnosis in the communication controller Arrangement for fault diagnosis in the communication controller

1976-03-15

1977-06-21

Atkinson, Charles E.

Registers

Transfer mechanism

Traveling pawl

179 18ES, G06F 1104

Patent

active

040313751

ABSTRACT:
Apparatus is described for monitoring and diagnosing faults in the communication controller of a line termination unit in a program controlled data switching system. Individual devices detect faults and emit fault signals using safeguarding programs for the fault diagnosis. The communication controllers each contain a fault collection device which receives the individual fault signals and forms a fault word therefrom which describes the fault. Further, fault reaction signals are formed. A diagnosis routine device evaluates a diagnosis command read out from the diagnosis zone of a central storage unit. The diagnosis routine device contains a first decoding circuit for decoding the operations portion of the diagnosis command and for forming control signals therefrom. The control signals cause data channels to be switched through between the word output register and the word input register, as well as between a fault word register containing the fault word in the fault collection device and an intermediate buffer store. A second decoding circuit in the diagnosis routine device is activated by an additional control signal for producing a second series of control signals by evaluating a command of the diagnosis command. The control circuits and registers of the communication controller are connectable to the word input register under the control of the second control signals for the transfer of the diagnosis command.

REFERENCES:
patent: 3409877 (1968-11-01), Alterman et al.
patent: 3557315 (1971-01-01), Kobus et al.
patent: 3775566 (1973-11-01), Akimaru et al.
patent: 3783255 (1974-01-01), Buedel et al.
patent: 3794973 (1974-02-01), Huber et al.
patent: 3806887 (1974-04-01), Schulte
patent: 3818199 (1974-06-01), Grossman et al.
patent: 3820085 (1974-06-01), Zelinski

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