Message control method for data communication system

Claim 2

The message control system as claimed in claim 1, characterized in that said transmitting side fault generation monitoring means (25) is a means for releasing the logical connection of the transmission system connecting means (23) and notifying said fault generation to the data processing part (14) of its own processing module (10, 40) when an internal fault related to the processing of the transmitting message is generated, said data processing part (14) makes the logical transmitting port (21) transmit a message block of a protocol violation in response to the notification of said fault generation, and the receiving side fault generation monitoring means (26) releases the logical connection of said reception system connecting means (24) and notifies a reception result to the data processing part (14) when the message block of said protocol violation is received by the logical receiving port (22).

Claim 3

The message control system as claimed in claim 1, characterized in that the transmitting side fault generation monitoring means (25) is a means for releasing the logical connection of the transmission system connecting means (23) and notifying said fault generation to the data processing part (14) of its own processing module (10, 40) when a fault is generated on the system bus (16, 23) during transfer of the transmitting message, said data processing part (14) makes the logical transmitting port (21) transmit a message block of a protocol violation in response to the notification of said fault generation, and the receiving side fault generation monitoring means (26) releases the logical connection of said reception system connecting means (24) and notifies a reception result to the data processing part (14) when the message block of said protocol violation is received by the logical receiving port (22).

Claim 4

The message control system as claimed in claim 1, characterized in that the receiving side fault generation monitoring means (26) notifies said fault generation to the data processing part (14) within its own processing module when an internal fault related to the processing of the received message is generated, and releases the logical connection of the reception system connecting means (24) when transmitting a status indicating said fault generation to the message transmitting side processing module (10, 40) via the logical transmitting port (21), and the transmitting side fault generation monitoring means (25) releases the logical connection of the transmission system connecting means (23) according to a detection result of said status.

Claim 5

The message control system as claimed in claim 1, characterized in that the receiving side fault generation monitoring means (26) releases the logical connection of the reception system connecting means (24) and notifies said fault generation to the data processing part (14) of its own processing module when a fault is generated on the system bus (16, 38) during transfer of the status, and the connection unit (13) within the message transmitting side processing module (10, 40) notifies the fault generation to the data processing part (14) of its own processing module and releases the logical connection of the transmission system connecting means (21) when no status is input for a predetermined time.

Claim 6

The message control system as claimed in claim 1, characterized in that the receiving side fault generation monitoring means (26) is a means for notifying the generation of an internal fault with respect to the data processing part (14) of its own processing module and releases the logical connection of the reception system connecting means (24) when the internal fault related to the processing of the received message after status transfer,and for transmitting a status of a protocol violation when the protocol violation of a message block which is thereafter received is detected, and the transmitting side fault generation monitoring means (25) releases the logical connection of the transmission system connecting means (23) according to a detection result of said status and notifies the fault generation to the data processing part (14) of its own processing module.

Claim 7

The message control system as claimed in claim 1, characterized in that the receiving side data processing part (14) monitors a reception process state of the logical receiving port (22), and requests a forced end to the logical receiving port and releases the logical connection state of the reception system connecting means (24) when a message block waiting state continues for a predetermined time.

Claim 8

The message control system as claimed in claim 1, characterized in that the connection unit (13) includes one or more physical transmitting ports (27) for managing a transmission protocol to the system bus (16) and one or more physical receiving port (28) for managing a reception protocol from the system bus (16), the transmission system connecting means (23) logically connects the logical transmitting port (21) and said physical transmitting port (27), and the reception system connecting means (24) logically connects the logical receiving port (22) and said physical receiving port (28).

Claim 9

The message control system as claimed in claim 1, characterized in that the connection unit (13, 43) includes the logical transmitting port (17, 51) and the logical receiving port (18, 53), a physical transmitting port (27, 55) and a physical receiving port (28, 56) for respectively controlling transmission and reception of the message, an access control unit (57) for processing an interface between the internal bus (44), a memory access control unit (58) for making an access to the memory unit (12, 42), a transmission control unit (59) for processing an interface of the transmission process between the system bus (20, 32), a reception control unit (60) for processing an interface of the reception process between said system bus (16, 38), a main sequence control unit (62) for managing control of the entire connection unit, and a memory (61) which is used as a work area of said main sequence control unit (62).

Claim 10

A message control system for a data communication system which employs a system structure in which a plurality of processing modules (10, 40) are connected to each other via a system bus (16, 38), where the processing module includes a central processing unit (11, 41), a memory unit (12, 42) which is only accessible by said central processing unit (11, 41), and a connection unit (13, 40) which forms an interface between said memory unit (12, 42) and the system bus (16, 38), characterized in that: the memory unit (12, 42) of the processing module (10, 40) includes: a data processing part (14) which is a software running on the central processing unit (11, 41), and a buffer (15) in which a transmitting message is expanded and stored, and the connection unit (13, 43) of the processing module (10, 40) at least includes: a logical transmitting port (21) which is provided as a communication port for the data processing part (14) and successively reads out the message expanded in the buffer (15) to transmit the same to a receiving side processing module (10, 40) which is logically connected, a logical receiving port (22) which is provided as a communication port for the data processing part 914) and successively stores the message which is received from a transmitting side processing module (10, 40) which is logically connected in the buffer (15) within its own memory unit (12, 42), transmission system connecting means (23) for setting or releasing the logical connection between said logical transmitting port (21) and the processing module (10, 40) at a communicating destination, reception system connecting means (24) for setting or releasing the logical connection between said logical receiving port (22, 53) and the processing module (10, 40) at the communicating destination, transmitting side fault generation monitoring means (25) for releasing the logical connection of said transmission system connecting means (23) and notifying a fault generation to the data processing part (14) of its own processing module (10, 40) if a fault related to the transmitting message or a fault related to the reception of a status indicating a message reception result from the receiving side processing module (10, 40) is generated when its own processing module (10, 40) is the message transmitting side, receiving side fault generation monitoring means (26) for releasing the logical connection of said reception system connecting means (24) and notifying a fault generation to the data processing part (14) of its own processing module (10, 40) if a fault is generated during processing of the received message or a fault related to a status transfer indicating a message reception result is generated when its own processing module (10, 40) is the message receiving side, detecting means (29) for detecting a forced end indication from the data processing part (14), transmission forced end means (30) for forcibly ending the transmission process of the logical transmitting port (21) when said detecting means (29) detects the forced end indication of the transmission process, and reception forced end means (31) for forcibly ending the reception process of the logical receiving port (22) when said detecting means (29) detects the forced end indication of the reception process.

Claim 11

The message control system as claimed in claim 10, characterized in that the detecting means (29) can detect an immediate forced end indication and a non-immediate forced end indication as the forced end indication of the transmission process, and the transmission forced end means (30) is a means for immediately ending the transmission process when said detecting means (29) detects the immediate forced end indication of said transmission process and for ending the transmission process at an end time of said transmission process where the message breaks when said detecting means (29) detects the non-immediate forced end indication of said transmission process.

Claim 12

The message control system as claimed in claim 10, characterized in that the detecting means (29) can detect an immediate forced end indication and a non-immediate forced end indication as the forced end indication of the reception process, and the reception forced end means (31) is a means for immediately ending the reception process when said detecting means (29) detects the immediate forced end indication of said reception process and for ending the reception process at an end time of said reception process where the message breaks when said detecting means (29) detects the non-immediate forced end indication of said reception process.

Claim 13

The message control system as claimed in claim 10, characterized in that said transmitting side fault generation monitoring means (25) is a means for releasing the logical connection of the transmission system connecting means (23) and notifying said fault generation to the data processing part (14) of its own processing module (10, 40) when an internal fault related to the processing of the transmitting message is generated, said data processing part (14) makes the logical transmitting port (21) transmit a message block of a protocol violation in response to the notification of said fault generation, and the receiving side fault generation monitoring means (26) releases the logical connection of said reception system connecting means (24) and notifies a reception result to the data processing part (14) when the message block of said protocol violation is received by the logical receiving port (22).

Claim 14

The message control system as claimed in claim 10, characterized in that the transmitting side fault generation monitoring means (25) is a means for releasing the logical connection of the transmission system connecting means (23) and notifying said fault generation to the data processing part (14) of its own processing module (10, 40) when a fault is generated on the system bus (16, 23) during transfer of the transmitting message, said data processing part (14) makes the logical transmitting port (21) transmit a message block of a protocol violation in response to the notification of said fault generation, and the receiving side fault generation monitoring means (26) releases the logical connection of said reception system connecting means (24) and notifies a reception result to the data processing part (14) when the message block of said protocol violation is received by the logical receiving port (22).

Claim 15

The message control system as claimed in claim 10, characterized in that the receiving side fault generation monitoring means (26) notifies said fault generation to the data processing part (14) within its own processing module when an internal fault related to the processing of the received message is generated, and releases the logical connection of the reception system connecting means (24) when transmitting a status indicating said fault generation to the message transmitting side processing module (10, 40) via the logical transmitting port (21), and the transmitting side fault generation monitoring means (25) releases the logical connection of the transmission system connecting means (23) according to a detection result of said status.

Claim 16

The message control system as claimed in claim 10, characterized in that the receiving side fault generation monitoring means (26) releases the logical connection of the reception system connecting means (24) and notifies said fault generation to the data processing part (14) of its own processing module when a fault is generated on the system bus (16, 38) during transfer of the status, and the connection unit (13) within the message transmitting side processing module (10, 40) notifies the fault generation to the data processing part (14) of its own processing module and releases the logical connection of the transmission system connecting means (21) when no status is input for a predetermined time.

Claim 17

The message control system as claimed in claim 10, characterized in that the receiving side fault generation monitoring means (26) is a means for notifying the generation of an internal fault with respect to the data processing part (14) of its own processing module and releases the logical connection of the reception system connecting means (24) when the internal fault related to the processing of the received message after status transfer, and for transmitting a status of a protocol violation when the protocol violation of a message block which is thereafter received is detected, and the transmitting side fault generation monitoring means (25) releases the logical connection of the transmission system connecting means (23) according to a detection result of said status and notifies the fault generation to the data processing part (14) of its own processing module.

Claim 18

The message control system as claimed in claim 10, characterized in that the receiving side data processing part (14) monitors a reception process state of the logical receiving port (22), and requests a forced end to the logical receiving port and releases the logical connection state of the reception system connecting means (24) when a message block waiting state continues for a predetermined time.

Claim 19

The message control system as claimed in claim 10, characterized in that the data communication system is a loosely coupled multiprocessing system.

Claim 20

A message control system for a data communication system which employs a system structure in which a plurality of processing modules (10, 40) are connected to each other via a system bus (16, 38), where the processing module includes a central processing unit (11, 41), a memory unit (12, 42) which is only accessible by said central processing unit (11, 41), and a connection unit (13, 40) which forms an interface between said memory unit (12, 42) and the system bus (16, 38), characterized in that: the memory unit (12, 42) of the processing module (10, 40) includes: a data processing part (14) which is a software running on the central processing unit (11, 41), and a buffer (15) in which a transmitting message is expanded and stored, and the connection unit (13, 43) of the processing module (10, 40) at least includes: a logical transmitting port (21) which is provided as a communication port for the data processing part (14) and successively reads out the message expanded in the buffer (15) in divisions according to a transfer unit of the system bus (16, 38) to transmit the same to a receiving side processing module (10, 40) which is logically connected, a logical receiving port (22) which is provided as a communication port for the data processing part 914) and successively stores the message which is received from a transmitting side processing module (10, 40) which is logically connected in the buffer (15) within its own memory unit (12, 42), transmission system connecting means (23) for setting or releasing the logical connection between said logical transmitting port (21) and the processing module (10, 40) at a communicating destination, reception system connecting means (24) for setting or releasing the logical connection between said logical receiving port (22, 53) and the processing module (10, 40) at the communicating destination, transmitting side fault generation monitoring means (25) for releasing the logical connection of said transmission system connecting means (23) and notifying a fault generation to the data processing part (14) of its own processing module (10, 40) if a fault related to the transmitting message or a fault related to the reception of a status indicating a message reception result from the receiving side processing module (10, 40) is generated when its own processing module (10, 40) is the message transmitting side, receiving side fault generation monitoring means (26) for releasing the logical connection of said reception system connecting means (24) and notifying a fault generation to the data processing part (14) of its own processing module (10, 40) if a fault is generated during processing of the received message or a fault related to a status transfer indicating a message reception result is generated when its own processing module (10, 40) is the message receiving side, first connection information managing means (32) for managing an identifier of the receiving side processing module (10, 40) which has a logical connection relationship to the logical transmitting port (21), second connection information managing means (33) for managing an identifier of the transmitting side processing module (10, 40) which has a logical connection relationship to the logical receiving port (22), block identifier adding means (34) for adding to the message block which is transmitted via the logical transmitting port (21) a block identifier for identifying a block value of said message block, and anticipated block identifier managing means for managing an anticipated value of a block identifier of the received message of the logical receiving port (22).

Claim 21

The message control system as claimed in claim 20, characterized in that the block identifier adding means (34) successively adds an identifier (F) which indicates a start of the message, an identifier (M) which indicates a middle message block and an identifier (L) which indicates a last message block to each message block which is transmitted in division according to a transfer unit of the system bus (16, 38) if the transmitting message block is greater than the transfer unit of the system bus (16, 38).

Claim 22

The message control system as claimed in claim 20, characterized in that the block identifier adding means (34) address a block identifier (S) which indicates a single block to the message block if the transmitting message block is smaller than a transfer unit of the system bus (16, 38).

Claim 23

The message control system as claimed in claim 20, characterized in that the block identifier adding means (34) address a block identifier (L) which indicates a last block to a last divided message block as it is even if the last divided message block out of the divided message blocks obtained by dividing the transmitting message according to a transfer unit of the system bus (16, 38) is smaller than said transfer unit.

Claim 24

The message control system as claimed in claim 21, characterized in that the block identifier adding means (34) adds an identifier (F) which indicates a last block to the message block at a start of a re-transmission when the data processing part (14) makes the re-transmission of the message block at the generation of a fault, and transmits it as a protocol violation message block to the receiving side processing module (10, 40).

Claim 25

The message control system as claimed in claim 21, characterized in that the connection unit (13, 43) transmits the divided message block as it is even if it is smaller than a transfer unit of the system bus (16, 38) when the message is distributed and stored in a plurality of buffers (15) and the message block which is transmitted in divisions according to said transfer unit reaches a final region of each buffer (15).

Claim 26

The message control system as claimed in claim 20, characterized in that the anticipated block identifier managing means (35) detects a fault generation if a message block added with a block identifier other than the anticipated block identifier is received from the transmitting side processing module which has the logical connection relationship.

Claim 27

The message control system as claimed in claim 20, characterized in that the anticipated block identifier managing means (35) has a first block identifier (F or S) of the message block as the anticipated value by a re-reception process of the data processing part (14) when a fault is generated in the receiving side processing module (10, 40).

Claim 28

The message control system as claimed in claim 20, characterized in that said transmitting side fault generation monitoring means (25) is a means for releasing the logical connection of the transmission system connecting means (23) and notifying said fault generation to the data processing part (14) of its own processing module (10, 40) when an internal fault related to the processing of the transmitting message is generated, said data processing part (14) makes the logical transmitting port (21) transmit a message block of a protocol violation in response to the notification of said fault generation, and the receiving side fault generation monitoring means (26) releases the logical connection of said reception system connecting means (24) and notifies a reception result to the data processing part (14) when the message block of said protocol violation is received by the logical receiving port (22).

Claim 29

The message control system as claimed in claim 20, characterized in that the transmitting side fault generation monitoring means (25) is a means for releasing the logical connection of the transmission system connecting means (23) and notifying said fault generation to the data processing part (14) of its own processing module (10, 40) when a fault is generated on the system bus (16, 23) during transfer of the transmitting message, said data processing part (14) makes the logical transmitting port (21) transmit a message block of a protocol violation in response to the notification of said fault generation, and the receiving side fault generation monitoring means (26) releases the logical connection of said reception system connecting means (24) and notifies a reception result to the data processing part (14) when the message block of said protocol violation is received by the logical receiving port (22).

Claim 30

The message control system as claimed in claim 20, characterized in that the receiving side fault generation monitoring means (26) notifies said fault generation to the data processing part (14) within its own processing module when an internal fault related to the processing of the received message is generated, and releases the logical connection of the reception system connecting means (24) when transmitting a status indicating said fault generation to the message transmitting side processing module (10, 40) via the logical transmitting port (21), and the transmitting side fault generation monitoring means (25) releases the logical connection of the transmission system connecting means (23) according to a detection result of said status.

Claim 31

The message control system as claimed in claim 20, characterized in that the receiving side fault generation monitoring means (26) releases the logical connection of the reception system connecting means (24) and notifies said fault generation to the data processing part (14) of its own processing module when a fault is generated on the system bus (16, 38) during transfer of the status, and the connection unit (13) within the message transmitting side processing module (10, 40) notifies the fault generation to the data processing part (14) of its own processing module and releases the logical connection of the transmission system connecting means (21) when no status is input for a predetermined time.

Claim 32

The message control system as claimed in claim 20, characterized in that the receiving side fault generation monitoring means (26) is a means for notifying the generation of an internal fault with respect to the data processing part (14) of its own processing module and releases the logical connection of the reception system connecting means (24) when the internal fault related to the processing of the received message after status transfer, and for transmitting a status of a protocol violation when the protocol violation of a message block which is thereafter received is detected by the anticipated block identifier managing means (35), and the transmitting side fault generation monitoring means (25) releases the logical connection of the transmission system connecting means (23) according to a detection result of said status and notifies the fault generation to the data processing part (14) of its own processing module.

Claim 33

The message control system as claimed in claim 20, characterized in that the receiving side data processing part (14) monitors a reception process state of the logical receiving port (22), and requests a forced end to the logical receiving port and releases the logical connection state of the reception system connecting means (24) when a message block waiting state continues for a predetermined time.

Claim 34

The message control system as claimed in claim 20, characterized in that the data communication system is a loosely coupled multiprocessing system.